Toopy

RIp my poor GTX675MX, you were so kind to me with your locked bios chip that I had to source spares and a programmer, flash a new chip and perform open vbios transplant surgery so I could clock past 823Mhz. Good thing I had a rework station already. Anyway from what I can tell it seems that one of the ram chips has died a horrific death (maybe), I can still flash/read/change the bios etc so its not that. Was running at ~1130GPU and 1230(4920DDR) on the ram, pushing for higher without thermal throttling in kombuster when everything crashed and upon restart I'm left with this. Now go to hell you dam 675mx that required surgery to flash you vbios, I was looking for an excuse to upgrade to a 970/80M anyway so here it is. However in the meantime(until prema gets these bios mods done) it surely will be missed.

@svl7 Hi, just wondering if you got around to sending me that flashed bios chip? http://forum.techinferno.com/general-notebook-discussions/1847-nvidia-kepler-vbios-mods-overclocking-editions-modified-clocks-voltage-tweaks-193.html#post47652

I'll have a look, by the way svl7 I wonder if the reason my 675mx varies and wont flash, as in the locked the bios is because GPU-z ID's it as a KAPOK not a dell?

hi Riri-Fifi is your card a DELL or Clevo, I noticed that GPU-z ID's it as dell. also where are you getting the OV/Vbios from, please share

yep tried the nvflash command nvflash --protectoff if you could send me a pre-programmed chip that would be absolutley fantastic

@svl7 so the plot would thicken as it seems. In my determined attempt to flash your modded bios, I desoldered the bios chip from my GTX675MX and attempted to flash it with an external SPI programmer. I first read the chip, which read fine, then tried to flash your bios to it. This is where all my attempt failed. While the flash completed upon rereading the chip the stock bios was still in place, I attempted to erase the chip first. Once again when reread the chip had not been erased. It seems that my bios chip is locked and I can only assume that it has something to do with the soft straps as the hardware Write lock pin pin is unlocked. Alas I could not find how to issue the commands to unlock the soft straps with my spi programming tool. It seems that I'm the only one with a locked 675MX bios chip so in the meantime I've resoldered the bios chip. If anybody knows the corret command syntax in nvflash to set BP0 and BP1 lock bits(I think these are the soft straps) to 0 I would be most greatful. Now I continue my hunt for a blank mx25l2005 rom IC. - - - Updated - - -

Using MSDOS, swapped back from prema's mod to the latest Clevo BIOS (which had never been on the machine before as it had the Horize BIOS), still didn't flash. back to premas mod still wont flash. I have a feeling that the #WP pin on the flash chip is enabled in hardware. I'm away from home at the moment so I don't have a any tools to check. Hopefully that's what the problem is which shouldn't be to hard to overcome. I also wonder if they are using a newer flash chip and nvflash only partially supports this one. Once I ope it up I'll check.

pretty much everything, I have tried the following in both dos and with nvflash windows. Trying to flash your Clevo GTX675MX 4GB bios nvflash -6 xxx.rom nvflash -4 -5 -6 xxx.rom nvflash --protectoff then the above nvflash -j -6 xxx.rom all error out with a mismatch in 256 byte page programming mode? when I try to flash the original bios saved from my card nvflash completes. I am not sure if it is flashing, is there any way to tell?

it still wont flash

@svl7 I don't if this will help but here is some extra info from my card. The last command shows the mismatch offset when comparing your modded 675mx 4gb Clevo Rom. If you could please have a look I'd be most thankfull. C:\nvflash>nvflash --pciblocks NVIDIA Firmware Update Utility (Version 5.118) Adapter: GK1xx (10DE,11A7,1558,7102) H:--:NRM B:01,PCI,D:00,F:00 The display may go *BLANK* on and off for up to 10 seconds during access to the EEPROM depending on your display adapter and output device. Identifying EEPROM... EEPROM ID (C2,2012) : MX MX25L2005 2.7-3.6V 2048Kx1S, page Reading adapter firmware image... Location Size Type 000000:00FBFF 64512 x86 00FC00:0209FF 69120 EFI C:\nvflash>nvflash -h work.rom NVIDIA Firmware Update Utility (Version 5.118) Adapter: GK1xx (10DE,11A7,1558,7102) H:--:NRM B:01,PCI,D:00,F:00 The display may go *BLANK* on and off for up to 10 seconds during access to the EEPROM depending on your display adapter and output device. Identifying EEPROM... EEPROM ID (C2,2012) : MX MX25L2005 2.7-3.6V 2048Kx1S, page Reading adapter firmware image... Current - Version:80.04.58.00.05 ID:10DE:11A7:10DE:1010 GK104 Board - 2051b004 (Normal Board) Compare with - Version:80.04.58.00.05 ID:10DE:11A7:10DE:1010 GK104 Board - 2051b004 (Normal Board) ERROR: Mismatch at offset 0x00000208

can I ask what you did to get it working? as I'm currently stuck with the 256byte mismatch error

Thanks, still didn't flash though Mismatch in 256 byte page mode programming. I now have a hatred of that sentence Pretty much about to give up now, pity as I upgraded to this laptop and didn't take the 680M option as I though I could flash and get stock 680M speeds out of the 675mx for les outlay. Are you sure that one of the pages in the modded VBios isn't larger than 256bytes? ( I could be entirely wrong here) I'm willing to experiment to try to sort out this problem if you are willing to help Flashing in dos? or via nvflash in windows? if in windows open gpu-z and try again, it seems unless you activate the gpu it won't see it. That's what I've found anyway. If in dos I have no idea. ASIC on my 675mx is 68.8%. Makes sense really as all of the mobile GK104's will be chips with faulty shader clusters(the ones on the outer edge of the silicon wafer) that didn't cut the mustard as desktop GTX680's

@svl7 Do you have any ideas why the modded bios wont flash to my GTX675mx? nvflash errors out at the fourth dot, while as I said before the bios read from the card reflashes without problems. One thing that gets me is that when nvflash errors out with the mismatch error, while it states before hand that it clears the EEPROM, if I verify straight after the original bios is still there and I don't need to reflash with my backup to retain a working card. I've tried -protectoff and it still doesn't haven't any effect. Could it be strap settings?

as far as I can tell it does flash, nvflash completes and report being successful. Could you modify the original bios I posted to see if that will flash?

I have a Horize P170EM http://www.horize.com/index.php/computers/horize-p170em-notebook-pc.html, the mainboard ID's itself as a Clevo in CPU-z and I've flashed Prema's Clevo P170EM sBIOS to it.

Has anybody got any idea's?

@svl7 I was wondering if you could help me flash your modified bios to a CLEVO GTX675MX, Bios ver 80.04.58.00.05. I've tried to flash your modded bios and nvflash errors out with "Error: Mismatch in 256 byte page mode programming" Here is my original bios if it helps. Clevo GTX675MX.zip

GPU-z will report the real speed that the ram is actually running at, as it is DDR(Double Data Rate Double data rate - Wikipedia, the free encyclopedia- GDDR5 in our case GDDR5 - Wikipedia, the free encyclopedia) the clock is quadrupiled to obtain the final memory clock speed. I'd use either MSI afterburner or EVGA Precesion with the OSD to display the Clocks, it will also display other usefull info like temp, GPU usage etc. However stick with NVinspector batch files for overclocking.

The latest NV drivers cause this issue, its a problem with NVinspector and the new drivers, go back to 306? I think it was and your problems will be solved.

I found that to recovery flash the bios I had to put the USB drive into the port closest to the HDMI port, not closest to the user. I have a 3610QM version of the PC

This is the modified VBios from the Russian mod, I'm just not sure how to roll it back into the bios to flash it, maybe svl7 can help here. russian vbios1241.zip

Is it possible to increase the voltage through a modded bios then? or can at least you modify the core speed in your modded bios back to 950 for us?

actually a 950/2800 bios will be fine sv17. Thanks or just let me know what to edit in the bios,

to anyone that has bricked their board, the recovery process is here.[Request] Dell Inspiron 17r SE 7720 Unlocked Bios

Can we please have a 950/2475 Bios please SVL7, Thankyou