Gregory's Server
ThinkPad UEFI firmware patches collection
Remove wifi or wwan whitelist? Unlock advanved menu and overclocking? All patches are here!
(I'm not sure if *50 series display whitelist patch is here, but anyway)
https://github.com/digmorepaka/thinkpad-firmware-patches
It's not Coreboot related. It patches stock ThinkPad Firmware (aka #Lenovo BIOS or PhoenixBIOS)
I didn't knew that T480 still has WWAN whitelist. At least it's not wifi or battery whitelist but still.