GoKawiilMagnet Forensics' GrayKey Preserve keeps seized iPhones from locking into BFU state
Magnet Forensics has released GrayKey Preserve, a device, and an Evidence Preservation Mode for its existing GrayKey system, which keep a seized iPhone in its After First Unlock (AFU) state even if the phone reboots or loses power. This counters Apple's inactivity reboot feature, which restarts an iPhone after 72 hours without a passcode entry and shifts it into the more secure Before First Unlock (BFU) state where more data is encrypted. The functions were described by a Magnet employee in an instructional video obtained by 404 Media.