How to patch UEFI Thinkpad W520 to support DDR3-1600?

Question

assembler

Given: A used Thinkpad W520 with 28 gigabytes of DDR3-1600 RAM, while it only works at DDR3-1333, judging by the publications, this is locked at the UEFI level, the processor (i7-2720QM) officially supports DDR3-1600 .
Task: find a patch, or patch UEFI yourself, with only rudimentary knowledge in x86 assembler.
So far I have been able to dig up: A page on Thinkwiki , which mentions the mythical Oleh (Oleg, as I understand it), who did this patch. There is even a link to BIOS-Mods with a dead download link, and a long patching instruction. I could not use the instruction, because. it looks like it is for a different version of UEFI, and bare byte sequences are not searched for in the firmware.
Naryl, of course, articles of a respectedNikolai Shley : https://habrahabr.ru/users/coderush/topics/, a lot of useful things have been written, but there is a big problem - I know the x86 assembler rather superficially, I don’t need it for other tasks, and time, apparently, you have to spend a lot on it. Perhaps someone can tell me how to solve my problem easier, or at least where better to dig?

Answer 1

I asked myself, I answer it myself: a reverser friend helped me figure it out: there is a wonderful place in the firmware code: first, a switch is made according to the type of memory, and this or that frequency is set, and then there is a transition to a piece that nails 1333 MHz with nails. At the moment, the patch has been prepared, but has not yet been sewn, I gave it to a specialist to look at with a sober look. If everything works out, then I think to file an article on Habr.