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Y500 BIOS flash error

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Hi, and thanks for your time =)

I'm attempting to flash the bios on my Y500 but am having an impossible time doing so. The first time, I had zero problems. This time, not for the life of me.

See, my Y500 had to have her mainboard replaced. Upon booting, it was evident that this board has a much older bios than the one I used to have (Lenovo bios splash screen is completely different, older).

When running the update installer from Lenovo's website, this is what happens:

post-19986-14494999075586_thumb.png

I'm not sure if I did it correctly, but I did manage to find all the files in my Temp folder and added the lines to the file which the error states, and still nothing. I even managed to find a v1.05 bios and the same thing, nothing.

Any ideas? Thanks

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Have you been in BIOS previously. There is an option Secure boot. Not sure what the default is but you have it enabled. Disable and retry.

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I just went back in there to look, but I do not have that option! The only thing I have is UEFI boot (which is enabled) and that is required for Windows to boot, of course.

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If you can find the .bin file it is trying to flash, try flashing from your DOS boot drive, as if you were flashing the modified version. I had to do this as well on my y510p, as I dont even have windows installed

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I tried flashing from a DOS USB boot stick. Specifically, I followed this guide: https://forums.lenovo.com/t5/Welcome-FAQs-Knowledge-Base/How-to-flash-InsydeH2O-EFI-under-DOS-enviroment/ta-p/278406

And, of course, she didn't work. I was returned the following error: "Error: Not support AT-p information CL Registry:0x0."

I'm at a loss. I hope there's something I'm missing or not doing correctly.

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Hi all, thank you for your help but I think I've done it. What a piece of work.

Using the Insyde installer from Lenovo's website, I had to do the following:

+replace bios filename (V2.04) with the V1.05 version I found,

+add the EngineeringErrorDisable switch to bypass the IHISI and whatnot error I was having,

+change two EC settings (as I was then prompted with an EC error after getting rid of the old one)

She updated, and then updating from V1.05 to V2.04 was business as usual, though the computer did hang on an all-white screen after it was finished, forcing me to remove the battery.

I had to change the support back from Legacy before windows would boot but anyway, it's done. Thanks again :)

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