[retsl]

This is true but there's automatic restart which will automatically restart the phone to get it back into BFU state:

> Automatic Restart is a security mechanism in iOS 18.1 iPadOS 18.1 and or later that leverages the Secure Enclave to monitor device unlock events. If a device remains locked for a prolonged period, it automatically restarts, transitioning from an After First Unlock state to a Before First Unlock state. During the restart, the device purges sensitive security keys and transient data from memory.

https://help.apple.com/pdf/security/en_US/apple-platform-sec...

> [...] inactivity reboot triggers exactly after 3 days (72 hours). [...]

https://naehrdine.blogspot.com/2024/11/reverse-engineering-i...

GrapheneOS also has this (https://grapheneos.org/features#auto-reboot) with a default of 18 hours.

Maybe one could try to force restart (https://support.apple.com/en-gb/guide/iphone/iph8903c3ee6/io...) to quickly get to BFU. But I could imagine that it'd be hard to remember and then execute the right steps in a stressful situation.