OnePlus 7 Pro ADB Error 'FAILED (remote: command unknown)'
FAILED (remote: device is locked. Cannot flash images) Unknown Command - ADB Fastboot TWRP LG - YouTube
How to unlock bootloader on M5c-Flyme Official Forum
RECOVERY] Official TWRP 3.3.1 for Moto G7 Plus [lake] | Page 4 | XDA Forums
Trying to get the bootloader unlock code for N200. OEM Unlock enabled. usb debugging enabled network unlock status unlocked. "command not supported in default implementation" on fastboot oem get_unlock_code. Using USB 2.0