IVprep VS heads

You can downgrade the X230 BIOS to version 2.60 from Windows using IVPrep.

If your Bios is above the vulnerable version, you need IVprep, this only works on Windows10 (or above), maybe using Freedos too, but no guide online I could find.

Installed thinkpad-ec patch and coreboot (with skulls/ivyrain) on my x230t but I reverted back to the stock keyboard so I don't want thinkpad-ec anymore. I tried to flash back the stock bios to get rid of it with [this]( IVprep/X230t.FL1 at master · n4ru/IVprep · GitHub ) FL1 file converted to a ROM with dd, but flashrom says that my chip size doesn't match and is 12MB. I've looked online for a while and extracted an FL1 file from a Lenovo BIOS update but none I can find are 12MB. Does anyone have any links to one?

I think that just pushes a UEFI capsule too, at least that is what this suggests.

And IVprep https://github.com/n4ru/IVprep/

if you want to install https://github.com/lynxis/thinkpad-ec so that you can use a *20 keyboard and a *20 battery on *30 or if you want to prepare to that with https://github.com/n4ru/IVprep/ or if you want to install https://github.com/n4ru/1vyrain after that to gain more options in BIOS and/or be able to use non-Lenovo-approved Wi-Fi card - you don't need a hardware flasher; you don't need it for either of these 3 projects; all 3 use normal software flashing; I also understand all 3 are fairly safe to use; lots of people have used them and I haven't seen much complains

Once you run IVprep you should be on BIOS version 2.64 on the T430.

I downloaded the VGA ROM for my Thinkpad W530 for both the Intel IGPU and Nvidia Quadro K1000M using this and configured the build config to use them with the correct PCI ports (8086,0166 10de,0ffc). Everything works fine except the output for both the VGA and the mini DP port. Does anyone have any ideas of what I could be missing here?

You may be interested in Heads, which is available on Purism laptops under the name PureBoot. Though this really needs a coreboot-capable machine, I think, and isn't something you can just add to your existing UEFI boot chain.

You don't need to encrypt anything to verify those images, you just need to sign them. See how Heads does this.

https://github.com/osresearch/heads

Unfortunately there is also the Heads secure firmware: https://osresearch.net/ as well. Otherwise my vote would go to Heads. Liive OS could be pretty hard to optimize in a search engine, they'll think it's misspelled. Could call it "Miles" and just never ack the reference...

Heads, https://osresearch.net/

If you worried about malicious changes, there is the write lock protection feature in coreboot that prevents internal flashing. This would require you to flash externally whenever you want to update coreboot. If worried someone will also flash your BIOS externally, you may want to look into Heads