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sigkill
Posts: 1 | Last online: 05.25.2016
Date registered
05.25.2016
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    • sigkill has written a new post "ThinkPad x220: problem with a custom BIOS" 05.25.2016

      Hi @_nobody_ , Hi @CodeRush,

      I'm the x220 owner who got the BIOS bricked.
      Let me add some more details about the process:

      1 - Laptop was with official BIOS_1.29 / EC_1.20;
      2 - From windows, updated to official BIOS_1.40 / EC_1.24;
      3 - From windows, installed custom 8duj26us_NWL_ADV_AES_PM_Speedo;
      4 - Custom BIOS unlocked Advanced Menu (with tons of chipset related options);
      5 - 2x8GB DDR3-1866Mhz modules installed. Changed RAM speed to 1866Mhz in BIOS;
      6 - Booted to Archlinux and dmidecode reported 1333Mhz as RAM speed;
      7 - I went back to BIOS and changed RAM speed to Auto and noticed that SR-IOV was not activated for PCI, so I decided to activate it since I plan to play a little with kvm and stuff (If I recall correctly, these were the only 2 changes that bricked the system).
      8 - Save and exit: BIOS bricked. Infinite boot/restart loop until I remove ac/battery;
      9 - Tried to remove all the hardware and clear CMOS. Nothing worked. Always in boot loop.

      The flash dump (using flashrom) is here:
      Let me know if you need any additional details.

      Thanks.
      --sigkill

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