How to change Android system boot slot form A to B

website fastboot get active slot boot anymore and only fastboot is fastboot getvar current-slot current-slot: b Finished Total time: fastboot --set-active=b fastboot getvar currentslot 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 get active 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  Android phones can now have an A and a B partition system for the OS and we can use this fastboot command to check and see which slot is currently active   stack trace: Error: failed to set active slot: Error: {error:{code:1,cmd:fastboot --set-active=b},stderr: waiting for any device >

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