Go back in bootloader
Unlock it again
Start from beginning with installation of recovery and iode
Leaf bottlader open
Start iode
It works then also the updater
You have no other chance at the moment
Problems with FP4 and relocking are known at the developers
Trying to find a solution
Do not try to relock it at the moment!!!
And do nothing with lock_critical or unlock_critical
This would brick it totally
At the moment you have a chance to unlock it again in boot mode