How to change the current active partition slot?

How to change the current active partition slot? fastboot set active slot fastboot getvar current-slot current-slot: b Finished Total time: fastboot --set-active=b Setting current slot to 'b' OKAY fastboot get active slot If this flag is not used, slotted partitions will default to the current active slot -a, --set-active Sets the active slot If no slot

fastboot get active slot I choose yes and then get back in recovery with “Active slot: b ” I didn't need to do fastboot —set-active=b So I then relaunch: adb

fastboot getvar currentslot Checking Android's Currently Active Partition Slot Explaining Fixing the ADB_Vendor_Keys Not Set Error Explaining Android · 7:33 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