Please make note of any settings you have changed in the BIOS * Follow below instructions to update primary BIOS: * primary BIOS is detected to be corrupted. * normal boot and the other is backup BIOS for auto recovery if * There're two BIOS ROMs on this product: One is primary BIOS for It needs the jumper jp55 set to 2-3 so it can be written ( point 1) I get that the backup BIOS flashing is a separate procedure This shows the difference in BIOS updates from S07KT1FA (old) and the S07K20A and up That could explain why I met the same shutdown after a long time but in the end the BIOS is Shan Last time I updated to 1.33, it may update primary BIOS first and then update the backup BIOS. If this is a dev jumper, why the production team leave it as 1-2 before handling over to end users.Ĥ> My best guess is this time (1.34 BIOS) may update backup BIOS first and the system failed and shut down. According to my experience, failure of the updating actually corrupted the backup BIOS. Or at least kindly fail with meaningful messages.ģ> Now I question what is the use of the jumper. Lenovo should put some clear message about the jumper and proceed only when jumper was set right. I expect Lenovo engineer should be able to find enough input.Ģ> BIOS update process is definitely not well considered. People can try to move jumper 55 from 1-2 to 2-3 and update BIOS again.ġ> I've given enough hints suggesting backup BIOS might be the problem maker.
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