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High_Voltage

Lenovo Y410p/Y510p BIOS mod to enable Nvidia eGPU support

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Thanks a million for helping me out.
The laptop came back to life through RAM module treatment, as proposed by @Klem

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I already had bios v3.08, installed WLAN model BCM94352HMB, went to bios to disable wireless (to bypass 'unauthorized wireless network card...' message), enabled bios backflash, ran the GT755m-based patcher (though I don't have GT755m video), flashed back to stock v2.07, and flashed the modded v3.08 and it works perfectly! Now I have wireless 802.11AC (5Ghz). Thanks so much guys for all the great work!

Edited by loann2846

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Hello guys,

 

I'm following the tutorial, but I'm getting an error when trying to apply the modified BIOS. When running EC from the DOS command I get the following message:

 

"DOS memory buffer 2 allocate failed"

 

and it refuses to update the EC. BIOS command worked properly. Any help?

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17 minutes ago, nevado said:

Hello guys,

 

I'm following the tutorial, but I'm getting an error when trying to apply the modified BIOS. When running EC from the DOS command I get the following message:

 

"DOS memory buffer 2 allocate failed"

 

and it refuses to update the EC. BIOS command worked properly. Any help?

 

We have seen this several times before. A few people here have faced this error and despite this, their PCs continued to work fine without updating the EC firmware. This means you're probably safe to proceed without having to do anything else.

 

If you still wish to have your EC updated, there could be a way. If I recall correctly, someone has managed to get it to flash under MS-DOS (rather than FreeDOS). You'll have to prepare an MS-DOS flash drive following the original Svl7's instructions, but keep in mind that the application required to do this doesn't work under Windows 10.

Edited by High_Voltage

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Hello High_Voltage,

 

Thank you for the quick reply. I have managed to fix it.

 

I noticed that after removal of the UltraBay card, the integrated graphic card went to "Standard VGA", I installed the driver, re-installed v3.08 BIOS and restarted the procedure, this time all flashed nicely.

 

I'm trying to boot windows now with my new GTX1060, but seems to be stuck on WIndows Logo screen forever...

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First of all, you could try:

 

1) Reseating all the connectors (especially, the ultrabay) - this has been the main cause of this sort of problems

 

2) Verifying that your power supply is good (try another one) 

 

3) Cold-booting windows (don't really remember how to do this)

 

4) Booting in safe mode (somehow) to see if it works

 

5) Does the system boot without eGPU? If not, maybe, this is related to BIOS settings? (UEFI/Legacy; AHCI/IDE; SecuceBoot, and all that stuff) 

 

 

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On 12/28/2018 at 9:15 PM, High_Voltage said:

 

We have seen this several times before. A few people here have faced this error and despite this, their PCs continued to work fine without updating the EC firmware. This means you're probably safe to proceed without having to do anything else.

 

If you still wish to have your EC updated, there could be a way. If I recall correctly, someone has managed to get it to flash under MS-DOS (rather than FreeDOS). You'll have to prepare an MS-DOS flash drive following the original Svl7's instructions, but keep in mind that the application required to do this doesn't work under Windows 10.

 

Hi @High_Voltage, I've the identical problem, "DOS memory buffer 2 allocate failed". I want to try with a ms-dos flash drive because i don't fell comfortable with the 2.07 EC. Can you link me tue guide to do this? someone managed to solve the problem? I'don't have a secondary gpu but the cd-rom drive. Maybe i can try whitout it. Sorry for my poor english

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5 hours ago, rossifumi12 said:

I want to try with a ms-dos flash drive because i don't fell comfortable with the 2.07 EC. Can you link me tue guide to do this?

 

Sure. Simply follow my normal installation guide, but replace step 3 with an MS-DOS flash preparation method described here. This method uses an old utility called HP Disk Storage Format Tool, which has been noticed not to work correctly under Windows 10. You will have to find a Windows 7 computer (earlier windows might work too!) to run it.

 

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On 1/7/2019 at 8:52 PM, High_Voltage said:

 

Sure. Simply follow my normal installation guide, but replace step 3 with an MS-DOS flash preparation method described here. This method uses an old utility called HP Disk Storage Format Tool, which has been noticed not to work correctly under Windows 10. You will have to find a Windows 7 computer (earlier windows might work too!) to run it.

 

 

Thank you @High_Voltage! I used a virtual machine tu run windows 7 on windows 10 and the HP tool worked. No problem with EC this time. Now i've to decide wich wifi card to buy. Intel dual band wireless-AC 7260 7260HMW or the Broadcom BCM9435HMB. Any suggestions?

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On 3/13/2018 at 2:51 AM, High_Voltage said:

In case you own a Lenovo Y410p or Y510p laptop, you might be interested in upgrading its performance by installing an external graphics card. Ultrabay eGPU adapter designed by @gerald was proven to be a convenient plug-and-play option to do exactly that. However, for a long time only an AMD-branded GPUs could be used due to limitations in the Lenovo's stock BIOS. The purpose of the modified firmware presented here is to expand the range of available GPUs by enabling Nvidia support on Gerald's Ultrabay eGPU adapter.

 

Huge thanks to:

  • @MWichni - For efficiently assisting me during the development of this mod. By flashing dozens of BIOS builds over the course of several weeks and thoroughly describing the effects observed (or the lack thereof), he enabled me to fully understand necessary parts in BIOS structure and come up with a final solution.
  • @svl7 - Whose unlocked BIOS / Whitelist mod has served as a basis for this modification. His discovery of a security hole in V2.07 BIOS has provided us with a convenient BIOS flashing method that does not require a physical programmer. The Unlocked BIOS and WLAN whitelist mods originally designed by him are also implemented in this BIOS mod.
  • @gerald - For designing the aforementioned adapter. Without it, all this work would make very little sense.

 

Key features:

  • Resolves the "40-second reboot" issue normally encountered while using Nvidia graphics cards with Ultrabay eGPU adapter, thus allowing all Nvidia cards to be used.
  • Based on the latest V3.08 BIOS.
  • Includes Svl7's WLAN whitelist removal mod - for the convenience of aftermarket WLAN card users.
  • Includes Svl7's BIOS debug menu mod - for the ease of experimentation with newly available features, e.g. attempting to use Nvidia Optimus to pass eGPU video back to laptop's display.

 

NB! Svl7's Debug Menu is not a toy! It contains a lot of options that are either not supported or partially supported by the hardware platform and/or can disturb its normal operation or prevent the PC from booting up at all. Any of the entries not originally present in the stock BIOS should be modified at your own risk!

 

DISCLAIMER:
ANY MODIFICATIONS YOU ARE APPLYING TO YOUR HARDWARE ARE PERFORMED AT YOUR OWN RISK! AUTHOR OF THIS MOD DOES NOT HOLD ANY LIABILITY FOR LOSS OR DAMAGE RELATED TO USING THIS SOFTWARE.

 

Screenshots:

  Reveal hidden contents

 

5aa713dff2206_workingbiosmod2.png.cacec4b56d9819d05615f58764afb6ca.png

5aa713e69ce54_E6639A6453529E031F33E62698E3985F840966CDCAD603274Cpimgpsh_fullsize_distr.thumb.png.957635edd91a756b1edd2ea22801abb5.png

Unigine.png.992006853e75c1861792b86e94b956fa.thumb.png.31d2b61697cfa00b0efe78fd99289983.png

 

 

Installation instructions:

  Reveal hidden contents

 

WARNING:

BEFORE INITIATING ANY FLASHING PROCESS, MAKE SURE THAT THE AC POWER IS CONNECTED AND THE BATTERY HAS AT LEAST 20% CHARGE LEFT. AN UNPLANNED POWER-OFF DURING FLASHING PROCESS IS GUARANTEED TO RESULT IN A BRICKED MOTHERBOARD.

 

  1. Install fresh, unmodified V3.08 BIOS. The installation file can be found on official Lenovo product support page for your PC.
  2. Enter the BIOS settings (by hitting F2 during boot) and enable BIOS Back Flash option.
  3. Following the instructions here, download and use Rufus utility to create a bootable USB drive running FreeDOS.
  4. Copy the CONTENTS of THIS_GOES_TO_DOS_FLASH_FIRST folder into the root of your FreeDOS flash drive.
  5. Download Universal BIOS Backup Toolkit 2.0, then by running program as Administrator, read your BIOS dump and save it as backup.bin.
  6. Place a copy of the backup.bin into PATCHERS folder.
  7. Depending on whether your system is GT750m-based or GT755m-based, run corresponding patcher.
  8. Carefully study patcher's output. If the patcher reports success, MDDED308.bin file will be created in the same folder.
  9. Once you've acquired MDDED308.bin, copy it to the root of your FreeDOS flash drive as well.
  10. Install stock V2.07 BIOS (Provided). This is a necessary step because later versions of BIOS contain additional flash-protect features.
  11. Connect your FreeDOS USB drive to the PC, reboot into BIOS. In BIOS boot settings change Boot mode from UEFI to Legacy Support, and Boot priority to Legacy first. Press F10 to save and exit.
  12. Once you have booted into DOS environment, type BIOS and press Enter to flash BIOS.
  13. Then, once finished, type EC and hit Enter in order to flash the EC.
  14. Once the EC flash is over, the system will reboot. Both BIOS and EC versions should now be V3.08. Svl7's advanced menu should be accessible at this point.
  15. Enjoy your modded BIOS!
  16. Should you ever decide to revert to Stock BIOS, simply flash the original V3.08 BIOS using the official update file provided by Lenovo.

 

 

 

If things don't go right:

  Reveal hidden contents

 

In case BIOS flash process was interrupted or didn't go as planned and your computer is unable to boot anymore, don't panic! The DOS flash drive you've created is conveniently supplied with the Crisis Recovery file. Just follow the instructions below in order to perform the Crisis Recovery:

  Reveal hidden contents

 

  • Disconnect both battery and the AC power from your computer.
  • Connect your flash drive to the USB3 port closest to the HDMI port.
  • Reconnect the AC power cable while holding Win+R key combination.
  • While continuing to hold the keys, turn on the PC.
  • After some time, the access indicator on your flash drive will start blinking. At this point you can release the keys.
  • Your PC will spin the fans and beep occasionally during the course of several minutes.
  • After the operation is complete, you should be able to boot again.

 

 

 

 

It has also been observed that very rarely some users experience problems while flashing the EC. The system would report "DOS  memory buffer 2 allocate failed" error. If this is your case, just reboot the system. You will stay at the EC version 2.07 which although is not recommended, doesn't seem to have any negative effect on the PC. If you still want to attempt flashing the EC to the latest version, you could try preparing Svl7's original DOS flash drive instead of Rufus FreeDOS one.

 

 

 

 

Error 43:

If you intend using the GTX10XX-series Nvidia card as the eGPU (which you probably do), you are very likely to encounter the infamous Error 43 in Windows Device Manager. This is a widely known issue in the eGPU community and is not related to this particular mod in any way. Following this guide thoroughly will in most cases resolve the Error 43 issue.

 

Download:

Get your copy here!

 

P.S.:

Version of this mod for Lenovo Y400/Y500 models is coming soon!

 

Hello I am new.  I own a Y510P and I want a gpu of 4gb either egpu or ultrabay.  low cost.  thnx. 

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On 11/26/2018 at 10:26 PM, Klem said:

If you laptop can start's, booting in Windows, but with black/blank display, then it means that you can reset the BIOS to default settings blindly.

Try completely disable laptop with press and hold Power/Start button. Then:

1. Press and hold F2 key
2. Turn laptop on. ( still hold F2 key)

3. Wait 5-7 sec, then release F2 key.

3. Press F9, then press Enter key.
4. Press F10, then press Enter key.
5. The  laptop restarts and now all should be good. 

 

Also 100% worked method:

Pull out all RAM modules, enable laptop without all RAM modules. Then disable laptop. Then temporarily insert only one different RAM module (with another memory size or different manufacturer), and start laptop. After these steps bios should be reset to default settings.

 

After a Geforce update I started to have some artifacts and bootups with disabled eGPU, so then I changed something in the BIOS setup (something like "Enable internal graphics" from "auto" to "always), and then now I got a black screen. I disassembled and reassembled it several times, shorted the CMOS, and nothing. I tried pretty much everything, even blind bios reset (following the motherboard manual), but I think the procedure is different than the modded BIOS.

 

After a couple days I just had enough and built a Desktop. This happened 7 months ago, btw.

 

Will try this tonight.

Edited by AllanDavidson

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Hi, thank you all for your labor to improving y510p, i have a few question, is this bios mod includes disabling intel gpu option and can i use ultrabay gt750m with this bios ? I am asking for this for using hackintos 

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On 3/13/2018 at 2:51 AM, High_Voltage said:

In case you own a Lenovo Y410p or Y510p laptop, you might be interested in upgrading its performance by installing an external graphics card. Ultrabay eGPU adapter designed by @gerald was proven to be a convenient plug-and-play option to do exactly that. However, for a long time only an AMD-branded GPUs could be used due to limitations in the Lenovo's stock BIOS. The purpose of the modified firmware presented here is to expand the range of available GPUs by enabling Nvidia support on Gerald's Ultrabay eGPU adapter.

 

Huge thanks to:

  • @MWichni - For efficiently assisting me during the development of this mod. By flashing dozens of BIOS builds over the course of several weeks and thoroughly describing the effects observed (or the lack thereof), he enabled me to fully understand necessary parts in BIOS structure and come up with a final solution.
  • @svl7 - Whose unlocked BIOS / Whitelist mod has served as a basis for this modification. His discovery of a security hole in V2.07 BIOS has provided us with a convenient BIOS flashing method that does not require a physical programmer. The Unlocked BIOS and WLAN whitelist mods originally designed by him are also implemented in this BIOS mod.
  • @gerald - For designing the aforementioned adapter. Without it, all this work would make very little sense.

 

Key features:

  • Resolves the "40-second reboot" issue normally encountered while using Nvidia graphics cards with Ultrabay eGPU adapter, thus allowing all Nvidia cards to be used.
  • Based on the latest V3.08 BIOS.
  • Includes Svl7's WLAN whitelist removal mod - for the convenience of aftermarket WLAN card users.
  • Includes Svl7's BIOS debug menu mod - for the ease of experimentation with newly available features, e.g. attempting to use Nvidia Optimus to pass eGPU video back to laptop's display.

 

NB! Svl7's Debug Menu is not a toy! It contains a lot of options that are either not supported or partially supported by the hardware platform and/or can disturb its normal operation or prevent the PC from booting up at all. Any of the entries not originally present in the stock BIOS should be modified at your own risk!

 

DISCLAIMER:
ANY MODIFICATIONS YOU ARE APPLYING TO YOUR HARDWARE ARE PERFORMED AT YOUR OWN RISK! AUTHOR OF THIS MOD DOES NOT HOLD ANY LIABILITY FOR LOSS OR DAMAGE RELATED TO USING THIS SOFTWARE.

 

Screenshots:

  Reveal hidden contents

 

5aa713dff2206_workingbiosmod2.png.cacec4b56d9819d05615f58764afb6ca.png

5aa713e69ce54_E6639A6453529E031F33E62698E3985F840966CDCAD603274Cpimgpsh_fullsize_distr.thumb.png.957635edd91a756b1edd2ea22801abb5.png

Unigine.png.992006853e75c1861792b86e94b956fa.thumb.png.31d2b61697cfa00b0efe78fd99289983.png

 

 

Installation instructions:

  Reveal hidden contents

 

WARNING:

BEFORE INITIATING ANY FLASHING PROCESS, MAKE SURE THAT THE AC POWER IS CONNECTED AND THE BATTERY HAS AT LEAST 20% CHARGE LEFT. AN UNPLANNED POWER-OFF DURING FLASHING PROCESS IS GUARANTEED TO RESULT IN A BRICKED MOTHERBOARD.

 

  1. Install fresh, unmodified V3.08 BIOS. The installation file can be found on official Lenovo product support page for your PC.
  2. Enter the BIOS settings (by hitting F2 during boot) and enable BIOS Back Flash option.
  3. Following the instructions here, download and use Rufus utility to create a bootable USB drive running FreeDOS.
  4. Copy the CONTENTS of THIS_GOES_TO_DOS_FLASH_FIRST folder into the root of your FreeDOS flash drive.
  5. Download Universal BIOS Backup Toolkit 2.0, then by running program as Administrator, read your BIOS dump and save it as backup.bin.
  6. Place a copy of the backup.bin into PATCHERS folder.
  7. Depending on whether your system is GT750m-based or GT755m-based, run corresponding patcher.
  8. Carefully study patcher's output. If the patcher reports success, MDDED308.bin file will be created in the same folder.
  9. Once you've acquired MDDED308.bin, copy it to the root of your FreeDOS flash drive as well.
  10. Install stock V2.07 BIOS (Provided). This is a necessary step because later versions of BIOS contain additional flash-protect features.
  11. Connect your FreeDOS USB drive to the PC, reboot into BIOS. In BIOS boot settings change Boot mode from UEFI to Legacy Support, and Boot priority to Legacy first. Press F10 to save and exit.
  12. Once you have booted into DOS environment, type BIOS and press Enter to flash BIOS.
  13. Then, once finished, type EC and hit Enter in order to flash the EC.
  14. Once the EC flash is over, the system will reboot. Both BIOS and EC versions should now be V3.08. Svl7's advanced menu should be accessible at this point.
  15. Enjoy your modded BIOS!
  16. Should you ever decide to revert to Stock BIOS, simply flash the original V3.08 BIOS using the official update file provided by Lenovo.

 

 

 

If things don't go right:

  Reveal hidden contents

 

In case BIOS flash process was interrupted or didn't go as planned and your computer is unable to boot anymore, don't panic! The DOS flash drive you've created is conveniently supplied with the Crisis Recovery file. Just follow the instructions below in order to perform the Crisis Recovery:

  Reveal hidden contents

 

  • Disconnect both battery and the AC power from your computer.
  • Connect your flash drive to the USB3 port closest to the HDMI port.
  • Reconnect the AC power cable while holding Win+R key combination.
  • While continuing to hold the keys, turn on the PC.
  • After some time, the access indicator on your flash drive will start blinking. At this point you can release the keys.
  • Your PC will spin the fans and beep occasionally during the course of several minutes.
  • After the operation is complete, you should be able to boot again.

 

 

 

 

It has also been observed that very rarely some users experience problems while flashing the EC. The system would report "DOS  memory buffer 2 allocate failed" error. If this is your case, just reboot the system. You will stay at the EC version 2.07 which although is not recommended, doesn't seem to have any negative effect on the PC. If you still want to attempt flashing the EC to the latest version, you could try preparing Svl7's original DOS flash drive instead of Rufus FreeDOS one.

 

 

 

 

Error 43:

If you intend using the GTX10XX-series Nvidia card as the eGPU (which you probably do), you are very likely to encounter the infamous Error 43 in Windows Device Manager. This is a widely known issue in the eGPU community and is not related to this particular mod in any way. Following this guide thoroughly will in most cases resolve the Error 43 issue.

 

Download:

Get your copy here!

 

P.S.:

Version of this mod for Lenovo Y400/Y500 models is coming soon!

 

 

Hi, did you ever released version of this BIOS for Y500? I was searching before writing here but I can only find old BIOS by @svl7

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1 hour ago, High_Voltage said:

@DrDriftMP 

 

 

God, I am blind, I was looking on that. Thank you very much!

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Can you tell me difference between your bios and @svl7? Right now I have flashed svl7's one and I am not sure if I have to flash your version for using exp gdc + 1060 with my y510p laptop.

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1 hour ago, rok666 said:

Can you tell me difference between your bios and @svl7? Right now I have flashed svl7's one and I am not sure if I have to flash your version for using exp gdc + 1060 with my y510p laptop.

 

They are mostly identical, except mine disables a shutdown if Nvidia egpu is inserted. I think this only affects ultrabay though, therefore you may be successful with svl7's one using an exp gdc. 

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Posted (edited)

Hey @High_Voltage,

I've been using 2nd Generation eGpu adapter with an NVIDIA GTX 1060 6GB card with your custom BIOS solution for almost a year now. Recently though (last 3-4 months) i started to experience crashes in several games. 


This is how the crash looks like:

 

-External display loses signal

-GTX 1060 fans spin up like crazy

-Sometimes internal screen (which is not used at all by me) turns on and i get "Display Driver Failed to Start" so instead the basic Microsoft driver is being used and "Application has been blocked from accessing graphics hardware" OR internal screen does not turn on and everything is black.

-To make the laptop useable again it always needs a hard reset.

 

ARK: Survival Evolved is by far the most critical game that is causing this.1186432402_Kpernyfelvtel(147).thumb.png.21d52dd6bfcb940b9718143fa8d2d2a8.png

Sometimes i get this error but not it is not consistent.

Interestingly the higher graphics im playing on the faster the game crashes. 

-Ultra ~ in 1 minute

-Medium ~ in 1-5 minutes

-Low ~ in 1-15 minutes

I got some success when i started the game in DX10 mode and turned everything to low. (By success i mean no crashes in 4-5 hours) But the game is quite unenjoyable with those settings.

Also noticed that intense visual effects tend to crash the game immediately if not started in DX10 (like big amount of flames or getting close the a beacon light)

 

Games that had this kind of crash:

-ARK

-GTA Online (very rare)

-The Sims 4 (1/3 of the times it happens)

-The Forest (mostly happens when graphic settings are on high but it crashed on low too)

-PC Building Simulator (only since a few patches)

-Fortnite (only higher settings)

-7 Days to Die (higher settings)

-Car Mechanic Simulator (higher settings)

 

Games that never had this kind of crash(no matter the settings):

-Rome 2 Total War

-FIFA 19

-Hearthstone

-League of Legends

-World of Tanks

-Rainbow 6 Siege

-Hearts of Iron IV

-Minecraft

-Far Cry 4

-COD WWII

 

I also never get crash when doing Word, Chrome etc...

 

Which led me to the conclusion that mostly those games crash that are relateable to Unreal Engine or Unity. There are a few exceptions though as you can see.

 

What i have tried to solve the problem:

-Updated graphic driver

-Reverted graphic driver

-Updated windows

-Replugged adapter

-Underclocked both gpu core clock and memory clock

 

 

Config:

-i7-4700mq @3.0GHz

-https://www.techpowerup.com/gpu-specs/msi-gtx-1060-gaming-x.b6360 (factory settings)

-12GB LDDR3 1600MHz

-120GB m2 SSD

-1TB SSHD

-Windows 10 Pro 64 bit

 

 

If you have any ideas please let me know.

Edited by balint234

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This sounds very much like a hardware-related problem. Not sure if it actually matters what engine the game you're playing is using. Seems like the GPU just crashes or malfunctions in some other way intermittently. 

 

I would start with un-plugging both adapter and the GPU itself and blowing the connectors with plenty of compressed air before reassembly. Additionally, you should check the soldering on both ends of the adapter for cracks or other defects. 

 

Then, I would recommend to try replacing the power supply. It would be my number one suspect at the moment as you've mentioned that more demanding games at higher settings generally crash more. Moreover, other people here have also seen intermittent issues due to what turned out to be a bad PSU.

 

I hope that helps. Please let me know about any progress with the issue. 

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Posted (edited)

Well the PSU is quite old but i just tested ARK at 1750 MHz core clock and i could play in DX11 Medium settings for an hour at least GPU was around 85-99% all the time and i only got a crash after the 3rd beacon i visited closely. Normally my GPU does 2000 MHz by default if temperatures are low (which they are cause it never goes above 48 C) and that case i get crashes quite quickly as i mentioned.

I was trying 1850 MHz before but as expected its stability was between this current attempt and the factory setting attempt.

 

I will definately try to blow out the whole thing. Also i might test my GPU in a desktop config and see if something similar happens.

Thank you for your help. I will keep you updated if i can or cant achieve something. :angel:

Edited by balint234

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      Banding was not present with the original TN panel using the same GPU.
       
      While checking a software side, I have noticed that Win10 has bit depth set to 8-bit...
       

       
      My initial reaction was, - "Easy, let's change it in `nvidia-settings` and we're all set":

      ...but that would be too easy, right? After selecting 10bpc and clicking "Apply" screen went off and back on, only to show that depth stayed at 8bpc. Repeating the above few times yielded exactly the same result and I'm not in a hurry to meet a cliched (and laymen) definition of insanity.
       
      Let's check GPU-Z. So far so good, nothing unusual. Notice the highlighted BIOS version and subvendor string:
       
      Time to delve into other tabs. We are running WDDDM v2.4 which supports GPU dithering, but hey... BIOS version has changed!
       
      Briefly back to `nvidia-settings` to check what is reported by vendor's own utility:

       
      So far, we have two strings for BIOS version:
      80.04.5A.00.02 (let's call it an "A") 80.4.33.0.37 (let's call it a "B")  
      Notice how 2nd one seems to not follow hexademical notation. Lastly, "NVIDIA BIOS" drop-down, reports "A" version:
       
      ...and monitor section which confirms that rig is indeed capable of 10bpc, but currently running at mere 8bpc:

       
      Windows "Adapter settings", reports version "B". It's 2019, diversity is a must.

       
      "NVidia inspector" is of the same opinion:

       
      Now, let's use some seriously legit tools and check-in exported BIOS file in `nvflash`:

       
      Here we have two three interesting findings:
      Reported vendor is Dell, not an HP. See this link for details. BIOS version is back to "A". Have I already mentioned diversity? MXM module uses MX25L2005 flash storage in WSON-8 packaging. If things go real nasty, we should be able to rescue a patient via Pomona clip and external programmer.  
      Loading the same file in "Kepler BIOS tweaker" confirms the facts:

       
      EDID settings, courtesy of NVidia Control Panel. Hex dump can be found at the bottom of this post.
      ...Shall I be worried about "60.02Hz" refresh rate?
       
      To summarize:
      Why two different BIOS versions are reported? Anything to do with UEFI (e.g. HP is sideloading its own during boot)?.. Why two different vendors reported? As far as I remember, this is branded HP GPU. Where to get "clean" BIOS of K4000M for future experiments? Ideally from 8770w equipped with "DreamColor" panel from a factory.  
      Link to the dumps, BIOS ROM and monitor EDID: https://mega.nz/#F!zGgRmQIL!9q2QFZtHuK2RQ-WHXMA4Mg (also attached to this post)
      K4000M.zip
    • By Blocker35
      Hi guys, bit of a rookie to the whole EGPU scene. Currently I have:
       
      - MacBook Pro 2015 13inch (3.1GHz Core i7 16GB RAM)
      - Razer X Core 
      - Apple TB3 to TB2 Adapter
      -  TB2 Cable (Cable Matters)
      - 23inch AOC External Monitor
       
      I am wonder about what graphics card to get to run X-Plane11 with high graphic settings?
      I have purgewrangler set up and ready to use with an AMD graphics card, but am also open to the idea of an Nvidia graphics card.
      Any advice appreciated. I did not buy a Windows PC as I need a Mac for various other things and wanted an all-in-one laptop.
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