Hello, i had some problems trying to mod this BIOS.
The laptop is a Lenovo Ideapad 100-15IBD with Intel Core i3 (Broadwell-U 9 series), 4gb RAM, Intel HD Graphics 5500 and nVidia 920M.
I have tried to install Hackintosh in this laptop, but i have problems with the DVMT Pre-Allocated memory. Default is 32mb, i need 96mb.
I tried to mod the EFI variables from the EFI shell but it did return me an error (something like "can't set variables 0x00000000000001").
I'm sure i didn't do anything wrong, so i thought that my bios could have variables locked.. Anyway it's not RSA signed (i think) because
Phoenix Tool doesn't say "Decrypted" and it can open my bios file.. i only need the DVMT changed to 96mb. Thanks in advance
PS. BIOS version is E0CN23WW.
PPS. Original BIOS from Lenovo .exe and my backup with fpt doesn't match in size.. if i look at the bioses they are identical, but one is 9mb and the other is 6mb. I don't know why.
PPPS. I also wanted to know if i could in someway recover from a bad bios flash
Original BIOS extracted from the .exe on Lenovo site: Link (Mediafire)
Backup BIOS done with FPT v10.0: Link (Mediafire)
The laptop is a Lenovo Ideapad 100-15IBD with Intel Core i3 (Broadwell-U 9 series), 4gb RAM, Intel HD Graphics 5500 and nVidia 920M.
I have tried to install Hackintosh in this laptop, but i have problems with the DVMT Pre-Allocated memory. Default is 32mb, i need 96mb.
I tried to mod the EFI variables from the EFI shell but it did return me an error (something like "can't set variables 0x00000000000001").
I'm sure i didn't do anything wrong, so i thought that my bios could have variables locked.. Anyway it's not RSA signed (i think) because
Phoenix Tool doesn't say "Decrypted" and it can open my bios file.. i only need the DVMT changed to 96mb. Thanks in advance
PS. BIOS version is E0CN23WW.
PPS. Original BIOS from Lenovo .exe and my backup with fpt doesn't match in size.. if i look at the bioses they are identical, but one is 9mb and the other is 6mb. I don't know why.
PPPS. I also wanted to know if i could in someway recover from a bad bios flash
Original BIOS extracted from the .exe on Lenovo site: Link (Mediafire)
Backup BIOS done with FPT v10.0: Link (Mediafire)