How to change Android system boot slot form A to B

How to change Android system boot slot form A to B fastboot get active slot Get active system slot fastboot getvar current-slot fastboot getvar all Get active system slot fastboot_ error_ failed to identify current slot Fastboot commands ; getvar super-partition-name, Returns the name of the super partition The name includes the current slot suffix if the super partition is an

fastboot_ error_ failed to identify current slot It may not flash TWRP as there is no active slot not bootable) If it is a slotted device in Fastboot run the command: fastboot getvar

fastboot set active slot stack trace: Error: failed to set active slot: Error: {error:{code:1,cmd:fastboot --set-active=b},stderr: waiting for any device > active The Power H922 server supports a maximum of 32 DDR4 fast boot times and is ideally suited to contain the rootvg of Virtual IO