How to Check and Change Current Active Slot on Android [Fastboot

If you device randomly got stuck in fastboot after a reboot, that means the counter hit zero and the bootloader marked your slot as unbootable

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

fastboot get active slot I never even knew that you could use fastboot with a locked bootloader! Learned something new

fastboot_ error_ failed to identify current slot fastboot recovery mode that shows signal strength and IMEI No They showed as having a uSD slot, so hopefully they have the correct chipset