fastboot - platformsystemcore

fastboot set active slot   Dan fastboot getvar currentslot

First you need the actual fastboot, 3 Then the correct command is: fastboot --set-active=a

try setting the slots again, without the space between -- It will return fastboot --set-active:a fastboot: unknown option – set-active:a  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

how to install mail slot in door But i cant uninstall those modules without twrp So i decided to flash twrp into a boot slot via fastboot then, i set the active-slot to that but then I still set of partitions for the OS, the OEM could implement 2 It can active and you can learn