Checking Android's Currently Active Partition Slot

From there you can run fastboot getvar current-slot to see which slot you are on And you can change slots using fastboot --set-active=the slot

In this video, I will be discussing how to fix the Fastboot OEM Unlock Waiting for any device

fastboot_ error_ failed to identify current 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 set active slot set-active=a if you have slot B active or fastboot --set-active=b if you have slot A active Check the active slot with fastboot getvar all