FAILED (remote: 'Fastboot command is not allowed

stack trace: Error: failed to set active slot: Error: {error:{code:1,cmd:fastboot --set-active=b},stderr: waiting for any device >

FAILED (remote: 'Fastboot command is not allowed fast boot Raspberry Pi OS The latest release of Raspberry Pi OS is made to get the most from Raspberry Pi 5 The newest version of our operating system

stack trace: Error: failed to set active slot: Error: {error:{code:1,cmd:fastboot --set-active=b},stderr: waiting for any device >

fastboot get active slot 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

I guess your bootloader is unlocked? Did you try to change the active slot? Get the current active boot slot: fastboot getvar current-slot

fastboot change slot I was able to fix this with fastboot --set-active=a followed immediately by fastboot flash boot and all the other partitions

fast boot Raspberry Pi OS The latest release of Raspberry Pi OS is made to get the most from Raspberry Pi 5 The newest version of our operating system