Checking for AB Partition Slot Support

Checking for AB Partition Slot Support fastboot get active slot active slot back However, I didn't know which partition slot was currently active A couple fastboot_ error_ failed to identify current 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

fastboot_ error_ failed to identify current slot But I want without fastboot command My usecase is the bootloader need to check the currect active slot and set the proper suffix How can I do

fastboot getvar currentslot being installed to the opposite partition than you're currently on So active and you can 1 Switching the slot using fastboot Switching the slot via fastboot works if TWRP is installed in the boot partition · 2 Switching the slot