@Benlehot - Yes, that is what you need, but in case you have 1.8V chip, or need for future system, might as well get a kit with 1.8V adapter also
https://www.amazon.ca/Flash-Programmer-M.../dp/B07V2H15M6/

We already confirmed RU changes do not stick, but maybe you will get lucky!?
to go to 0x12D you need to go to line 120, then out to column 0D, this = 0x12D

I think he also removed the original hard drive, so no drive at all, and tested, and it still changed back to original values,
But, maybe you will get lucky, or he was doing something wrong etc?

Perfect I ordered the kit. I should get it in the first half of October.

I can try to test the changes in RU till then.

Good, that is safest way to try and force this. Let me know how RU goes for you, thanks

@Benlehot Welcome RFDer! Good luck! Yep, post RU screenshot if you can't find the 0x12D in SaSetup.

@Lost_N_BIOS I removed and HDD/SDD but the BIOS still reverse back. I don't think I did wrong.

Small world! I guess we were a lot to get into this deal.

I will boot into RU later this pm or tonight and take some screenshot.

Thank you!

@Lost_N_BIOS @Black-Xstar

I was able to change the value in RU but I can confirmed the same. After reboot, the value is restore to disable.