Macrofeet

How I UNBRICKed 8900m or M6970 from bad flash Took things further made a custom rom so that the overclock would be default... however i stupidly used the windows flash to do this and it bricked my card... i found a way to unbrick if software flash goes bad but you need to spend some money You will need one of these cost around $5 with clip (you need the clip) https://www.ebay.co.uk/itm/CH341A-24-25-Series-EEPROM-Flash-BIOS-USB-Programmer-SOIC8-Clip-On-Board-Kit/183561041571?hash=item2abd1736a3:g:SaMAAOSwe9Vb~615 Connect the clip to the usb writer board in the same way from the youtube video for 8900m is 25xx chip 1/ Get linux if you dont have https://linuxmint.com/ IMO Best way is to use linux as installing drivers/apps in windows looked possible grief I used linux mint 19.2 not sure if this fix will work booting from a usb boot drive without installing as you will need to install flashrom so you will probably have to install linux. if you dont know what linux is or how to install give up here. 2/ Once installed and running in cmd type "lsusb" make sure when usb programmer plugged in it says QinHeng etc in list this means the usb board is probably working 3/ type "sudo apt-get install flashrom" (get/install flashrom the program to flash the card) 4. Connect the clip to mxm graphics card Hold the card with gold pins facing up so that the gpu chip/metal surround is slightly to the right of the card the bottom right of the gpu surround a small chip with a blue mark on on the edge of the card is an arrow this is pin 1 and the red cable on the usb programmer clip goes to pin 1. The chip above blue marked chip is not readable. 5. read the rom and backup "sudo flashrom --programmer ch341a_spl -r Biosbk.rom" the extra light mentioned in youtube video did not appear for me it still read the chip fine after playing about getting the clip aligned was slightly greif it felt like the pins were not touching. 6. Download/copy bios you want to flash from https://www.techpowerup.com/vgabios/?manufacturer=Dell&amp;model=HD+6970M copy into the same folder as biosbk.rom is now located 7. Only if 5 worked meaning the pins are aligned correctly and the programmer can read the chip etc you could at youre own risk type "sudo flashrom --programmer ch341a_spl -w 6970.rom" 6970.rom < The file name of the bios file you want to flash (the one you downloaded) This should hopefully fix you're card if it was not fried when you powerd back on from the bad flash. watch and follow this guide turn up the volume the sound is bad it is the same thing but for a desktop Nvidia card

Hi, came to this post from google was only 1 of 2 threads i found about flashing this card sorry if its to old to post on but thought might be useful for people trying to press the last out of the precision laptop. *Disclaimer following could brick/break the GPU making the laptop useless I have the dell 6600 precision I7 with the m8900 and wanted to do the reverse flash for gaming and overclocking if anyone was still wondering (this worked correctlyish) Roms from https://www.techpowerup.com/vgabios/?manufacturer=Dell&amp;model=HD+6970M Dell.HD6970M.2048.101214 Ver 013.010.000.009.039462 Date 2010-12-14 17:33:00 (0ld) Dell.HD6970M.2048.110418 Ver 013.012.000.012.040739 Date 2011-04-18 16:55:00 (new) Process I tried the latest windows flash did not want to spend the time to make a usb boot drive, ended up worrying about using this as background services etc, also could not figure out how to force flash, did not seem to work in admin command prompt in the end I made a usb dos boot drive as shown in first post. On first boot realised you need *atiflash 417 latest DOS ver https://hw-lab.com/atiflash.html i flashed the newer rom(Dell.HD6970M.2048.110418) but for some reason graphics were still showing up as a m8900 in bios and windows so tried again, same thing even tho flash completed both times. Next I tried the older rom(Dell.HD6970M.2048.101214) this flashed fine but must have predated the m6600 as boots with no dell logo and bios boot option does not appear but boot options still working if you blind press f12 then wait blind press the down and enter key = 1-5 times until you hit lucky with bios or boot from usb. However even with no bios splash screen Windows 7 with (Dell.HD6970M.2048.110418) booted fine and accepted it as a new card. Next I tried flashing over the older rom (Dell.HD6970M.2048.101214) again with latest (Dell.HD6970M.2048.110418) and got it all working post screen options etc now even in bios graphics show as a 6970m. downloaded https://leshcatlabs.net/ Catalyst_16.2.1_UnifL_v1.0 this i think is the newset posiible 3rd party driver for 6970 and allows over clocking etc i think its really for dual gcard systems but just install/unzip it all then install from the amd folder. Overdrive settings gpu: 730 mem: 960 temps do look hot but no artifacts etc going to try out cooler later. Also been playing around with radeonmod https://www.guru3d.com/files-tags/download-radeonmod.html everytime you restart the gcard it does crash radeon control settings. Anyway hope this helps anyone wanting to play fortnite etc as the m8900 is to slow in the recent updates with tubes etc can just about run it in 60fps, after doing this strangly won a game, Cant really see a massive change in FPS not had time to run test properly but at least unlocked overclocking/ drivers etc should be better.