fastboot set active slot
How to automate slot selection after android AB-Update
fastboot set active slot
website fastboot set active slot Then change slot a to b or b to a if phone already slot a first set-active=a or b Bootloader fastboot_ error_ failed to identify current slot I had to install Android 9 on both (You can check the active slot with fastboot getvar current-slot , and select a slot with fastboot --set
fastboot set active slot After some more googling I eventually figured out that the fastboot getvar current-slot returned I was set on a active slots? That According to the install instructions the OS was flashed to both slots Just try fastboot --set-active=a and fastboot reboot If the phone Fastboot commands ; set_active slot> Sets the given AB booting slot as active On the next boot attempt, the system boots from the specified slot For AB