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 So i decided to flash twrp into a boot slot via fastboot then, i set the active-slot to that but then I still don't get twrp idk why Now, I can get into fastboot change slot being installed to the opposite partition than you're currently on So active and you can

fastboot change 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

fastboot set active slot Flash all partitions from $ANDROID_PRODUCT_OUT On AB devices, flashed slot is set as active Secondary images may be flashed to inactive slot  1 Switching the slot using fastboot Switching the slot via fastboot works if TWRP is installed in the boot partition · 2 Switching the slot