Issue #540 has been updated by Angel Pons.
Even though bypassing Boot Guard is possible on Skylake, the ME on Broadwell uses a completely different ISA for its CPU core (Skylake uses a mini-x86 core, Broadwell and earlier use some ARCompact thing?). So backporting the bootguard bypass thing is significantly more complicated because of that.
---------------------------------------- Feature #540: Support for Lenovo ThinkPad X250 - the competitor to the shortly added HP EliteBook 820 G2 https://ticket.coreboot.org/issues/540#change-1853
* Author: akjuxr3 akjuxr3 * Status: New * Priority: Normal * Category: board support * Target version: none * Start date: 2024-05-22 * Affected hardware: Lenovo Thinkpad X250 ---------------------------------------- Coreboot now have support for the HP EliteBook 820 G2. This is great, but sadly the keyboard is for a person using Thinkpad keyboards forever not usable. The Thinkpad X250 is the competitor to the HP EliteBook 820 G2. https://www.notebookcheck.net/Face-Off-HP-EliteBook-820-G2-vs-Lenovo-ThinkPa...
The X250 also have a Full-HD IPS screen. This would also fix the problems many people have with the X230 and spend much time and effort to get a Full-HD IPS screen running in the X230.
Nico Huber have(had?) such a X250: https://review.coreboot.org/c/coreboot/+/23820/7#message-04cf9f804c1292f457c...
Other coreboot developer also seem to have a X250: https://review.coreboot.org/c/coreboot/+/51179
Have someone taken a deeper look into the Thinkpad X250? Is there something special why suddenly the HP EliteBook 820 G2 got supported instead of a typical Thinkpad like it was the case for years at coreboot?