Is it possible for you to tear down your computer and directly attach some test clip to a BIOS chip (e.g. SOIC8 test clip if your BIOS chip is SOIC8 format) ? That will bypass the write protection and no soldering is required. However, if your BIOS chip has a weird format for which no test clip exists, you would have to desolder a BIOS chip from your board and put it to some adapter connected to flasher
Best regards, Mike
On Thu, Feb 22, 2018 at 10:40 PM, Björn Tantau email@example.com wrote:
Am 22. Februar 2018 17:56:31 MEZ schrieb Nico Huber firstname.lastname@example.org:
On 20.02.2018 12:57, Björn Tantau wrote:
I tried to flash a new BIOS to my AOpen i965GMt-LA motherboard.
the ROM worked, but flashing did not. I'll gladly give you more information, just tell me what you need. :-)
boards of that generation often have a write-protection pin of the flash chip asserted (often only to prevent accidentally writing to the flash). There is no standard for this, so that pin could be connected to any- thing, e.g. a jumper on the board, a GPIO of another chip (maybe con- trolled by a BIOS setup option or by the vendor flash application). In the latter case, flashrom would need something we call a board-enable procedure to toggle the GPIO.
Please consult your board's documentation for anything flash related. If you can't find something, you can try to find the board's schematics to figure out if there's a write-protection pin and where it is connec- ted to. Reverse engineering the vendor's flashing tool would also work.
unfortunately the only jumper on the board is used to clear the CMOS. Reverse engineering seems to be the only option left. Unfortunately I'm not well versed in these arcane arts. ;-)
Thanks for your help, Björn
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