Stuck FastBoot Mode

slot change, we must know in which slot the current system is running For that, we write the following: fastboot getvar current-slot It

查詢目前使用那個槽， 看目前的slot是a還是b，一般都是a。1$ sudo fastboot getvar current-slot 參考 adb

fastboot change slot fastboot getvar current-slot current-slot: a finished total time: fastboot --set-active=b fastboot: unknown option -- set-active=b

fastboot set active slot fastboot getvar battery-status; fastboot getvar battery-voltage current partitions and flashing the backed-up images saved on your computer