Android fastboot 查詢當前使用的ab槽

If the bootloader implements fastboot, it should support the command set_active slot> that sets the current active slot to the given slot (this

The inactive slot contains an older bootloader whose anti-rollback version has not been incremented If the active slot is then flashed with a build that fails

fastboot_ error_ failed to identify current slot being installed to the opposite partition than you're currently on So active and you can

fastboot get active slot If you device randomly got stuck in fastboot after a reboot, that means the counter hit zero and the bootloader marked your slot as unbootable