12-24-2018, 06:19 AM
I have a T500 laptop, and messed up the stock Lenovo BIOS (updated it without updating the EC) and ended up breaking keyboard input which made the entire laptop unusable (couldn't boot any device). Managed to flash Coreboot and now the laptop is usable, but I'd really like to return to the Lenovo BIOS in order to update my EC.
My EC is at version 1.01 (oldest version). I'm pretty sure my laptop is a 7V model (not 6F). Looking at the BIOS update notes from Lenovo, the last BIOS version to support that EC is 2.16-1.01 (BIOS ID 7VET66WW and ECP ID 7VHT12WW), which can be downloaded here. Once extracted however, it provides two relevant files in the 7V folder, $01B8100.FL1 (2.4MB) and $01B8100.FL2 (4.2MB), but neither file reads as a proper BIOS image according to ifdtool, and I'm unsure if I could just flash either of them.
I'd like to flash a T500 or W500 BIOS dump from another laptop in hopes it will allow me to use Lenovo's BIOS update CD to update the EC. After that, I'll go back to Coreboot and be content.
I'd be interested in any dump from a T500 or W500, but here is my specific laptop info if it'll at all be useful:
My EC is at version 1.01 (oldest version). I'm pretty sure my laptop is a 7V model (not 6F). Looking at the BIOS update notes from Lenovo, the last BIOS version to support that EC is 2.16-1.01 (BIOS ID 7VET66WW and ECP ID 7VHT12WW), which can be downloaded here. Once extracted however, it provides two relevant files in the 7V folder, $01B8100.FL1 (2.4MB) and $01B8100.FL2 (4.2MB), but neither file reads as a proper BIOS image according to ifdtool, and I'm unsure if I could just flash either of them.
I'd like to flash a T500 or W500 BIOS dump from another laptop in hopes it will allow me to use Lenovo's BIOS update CD to update the EC. After that, I'll go back to Coreboot and be content.
I'd be interested in any dump from a T500 or W500, but here is my specific laptop info if it'll at all be useful:
- The dump can come from any dump tool (Intel Flash Programming Tool, flashrom, SPI)
- T500 (no ATI graphics; it seems the W500 uses the same BIOS)
- 7Vxxxxxx-based (pretty confident in this; unsure what the difference is between that and the 6Fxxxxxx-based laptops)
- 4MB MX25L3205D BIOS chip (it's definitely 4MB, but apparently this is rare and the usual chip in T/W500 is 8MB or 16MB; I'm thinking either it'll dump only 4MB from those chips, or I can remove extra padding to make it fit in 4MB)
One Whitelist removed, I think this is modified flash package, similar files inside but different sizes + T500/W500m (8MB IMG file) and a second W500 dump (Also 8MB IMG), and one actual T500.bin dump but it's only 1KB?? Probably not useful, especially that last one, but posting for you in case they help for now, I will look more for a 4MB dump later when I have more time