Model: 15IMH05
bios: egcn33ww
I want to get advanced bios settings for cpu undervolting
extract the 2 files to get my dump file

Dear Mokhtar

Have you tried first switching off laptop. Then pressing and holding these 2 keys simultaneously: "Win" and "R"... while keeping them pressed together, press the "Novo" button on your ideapad... then go to the BIOS option and you should see the advanced options you need...without having to flash :)

At least it works on my G580 (20150) with BIOS 5ECN96WWV9.01
I hope you have the same success.

Thank you for your advice, but unfortunately, it doesn't work.