>As of January 2021 deleting SecureBoot keys and installing your own keys (for example by using KeyTool) will brick the device. This is a problem that is simila

>As of January 2021 deleting SecureBoot keys and installing your own keys (for example by using KeyTool) will brick the device. This is a problem that is similar to one which has been reported on some other Lenovo laptops [0] and is likely due to a faulty firmware. If the device is stuck in a boot loop after replacing the SecureBoot keys, the only way to repair it is by replacing the mainboard of the device. [0] https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/BIOS-BUG-X1C7-quot-Configuration-changed-restart-system-quot-loop-after-enrolled-my-own-secureboot-key/m-p/4607484 https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/BIOS-... From https://wiki.archlinux.org/title/Lenovo_ThinkPad_T14/T14s_(Intel)_Gen_1#Secure_boot https://wiki.archlinux.org/title/Lenovo_ThinkPad_T14/T14s_(I...