[Abstract] Using the Nordic nRF52840 Dongle development board in conjunction with the Google OpenSK project, creating an open-source, physical security key that supports the U2F FIDO and FIDO2 standards.

[Abstract] 在bootloader遭篡改等无法使用fastboot及recovery的情况下，不经过bootloader，使用EDL对Lenovo Tab4 8（Lenovo TB-8X04F）进行操作系统恢复。