FP4 - Stuck in fastboot mode - relock the bootloader

How To Guide - How to manually switch the active slot fastboot get active slot On AB devices, flashed slot is set as active Secondary images may be flashed to inactive slot flash PARTITION Flash given partition, using the fastboot getvar currentslot 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 The inactive slot contains an older bootloader whose anti-rollback version has not been incremented If the active slot is then flashed with a build that fails