fastboot set_active command does not exist

i do the fastboot with command my phone reboot : black screen with only and stays like that : => FASTBOOT mode then i command 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

change slot fastboot Execute magiskboot repack to repack the boot image, and you will get a file, flash this file to device by fastboot INFO Official

slot gaat niet meer open The smaller Pro variant will likely slot in between these two price points There's no indication that this will change in the near future