There's a lot of useful info here relating to X230 ECs, which may help. Mostly applicable to the X220 too.
https://github.com/hamishcoleman/thinkpad-ec On Sun, 5 Mar 2017, at 14:31, qma ster wrote: > It should be possible to reflash EC internal firmware through a > keyboard port, - or maybe through some other debug port that may or > may not be soldered by default... For example, here is a guide that > describes how to reflash EC KB9012 internal firmware on Lenovo G505S - > "AMD based laptop that is supported by coreboot project" , > http://dangerousprototypes.com/docs/Flashing_KB9012_with_Bus_Pirate . > Thanks to this method it is possible to flash a completely clean EC > KB9012 firmware image, which: 1) does not contain any "secret configs" > (could be stored in the free place after the firmware) 2) does not > contain any serial numbers or other specific laptop information ... > For any EC it is guaranteed that it IS possible to reflash a firmware > through In-System Programming (direct flashing) - otherwise, 1) how > the manufacturers flash EC for the first time? ;) 2) if some laptop's > EC is burned, how do repair shops flash a firmware to a new > replacement EC? > Sadly, for this direct flashing method you may need to buy a > proprietary programmer (closed source hardware/software) , because a > flashrom does not support every EC in existence > > 2017-03-05 13:20 GMT+03:00 Arthur Heymans <[email protected]>: >> "[email protected]" <[email protected]> writes: >> >> > Well I managed to download the latest BIOS from the lenovo site, >> > which includes an ME update now the issue is that I can't seem to >> > figure out how to extract it from the .FL1 and .FL2 files. >> > >> Those might have a length too long to fit a flash so you need to trim >> those down before using ifdtool on those (If they contain and ifd of >> course) >> so depending on size of rom >> dd if=FL1(or 2)file of=vendor_bios.rom bs=1 count=xM >> >> and then ifdtool -x vendor_bios.rom >> >> > I would also like to know as to how I can re-flash the EC firmware >> > if that could potentially cause problems, I of course do not know >> > if it has DMA. >> > >> >> Only existing tool to flash EC is using vendor tool. >> EC are only accessed trough port mapped IO (or on newer ones >> also via >> memory mapped IO). EC itself does not have DMA afaik. >> >> -- >> Arthur Heymans >> >> -- >> coreboot mailing list: [email protected] >> https://www.coreboot.org/mailman/listinfo/coreboot > -- > coreboot mailing list: [email protected] > https://www.coreboot.org/mailman/listinfo/coreboot
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