My friend bricked his Lenovo Legion Y540-15IRH by shutting it down, I tried to download the latest bios and program it but the bios file is bigger than the bios chip.
So I found some steps for a Lenovo Y740 to grab the bios region, I tried to write the bios region to the chip, it fitted the bios chip, but the machine does not boot and is doing less than before. I don’t know what I’m doing but perhaps the bios requires additional modification?
Someone who backed up the broken bios before trying to write something- very good!
Your update process from CN41WW to CN44WW stopped after updateing EC firmware within the first EFI volume of the bios region (1FD0BACE-6F0A-4085-901E-F6210385CB6F)
Could you tell me where I can learn more about the fix? It’s really abracadabra for me and I’d to expand my knowledge on firmware, it’s really interesting!
There’s no guide for this kind of fix, you need to find the bios versions, UEFIToolNE for the structure and a hex editor to compare the files and to find out where changes were made/ stopped.
My computer is the same make and model but this bios did not work for me. I share the product information below, can you please help me find the original bios.
Lenovo Legion Y540-15IRH-PG0
Serial Number : PF1RQK9B
Machine Type Model : 81SYCTO1WW
Factory ID : JVHFC1
I’m sorry but I don’t have a backup. I have tried different bios before but the screen won’t turn on. I can’t find the original .bin bios for my device.
I did exactly what you said and the file size was 16,777,216 bytes. I used the CH341A module to rewrite the bios bin file, but still no display on the computer screen. The keyboard lights come on, the fans spin and turn off again. I haven’t figured out what else to do, I’ve tried many bios but it’s always the same.
