[Request] Unlock Insyde BIOS for Lenovo G560

Hi everyone!

I have a Lenovo G560.
The current version of the BIOS is 29CN38WW (v2.15)
Description_Version
File_BIOS

I really want to unlock my BIOS to modify some options, as the video dedicated memory. I've searched a lot, but the only two options that I find are not enable to download anymore...

Thanks for your help!