It became irrelevant, kind people helped me, and after reading a lot of forums.
I realized how to do the same thing manually.
I'm applying a cleared bios with the built-in memory disabled.
But this will not help, you need to rearrange the straps additionally.
I think the LA-K061p scheme will help in this case....

Hello,
Please disable onboard ram for this bios dump, from [B]Lenovo thinkbook 15 g2 are[/B],

[B]SN:MP1ZY51J
MTM: 20VG0077RU
MO: MPNXB14100FB
board model: FLV3B LA-K062P Rev: 1A
2020-10-20[/B]

I tried to edit the bios myself. But it didn't work out. I didn't quite understand what the .mps files were created for, indicating the offsets. When executed, they do not change anything.
Changes are made only with the Disable_RAM.mps file. They are similar to others from Lenovo 15 g2 ITL, but it still doesn't work.Hello,
Please disable...