We’d like to start by saying we haven’t actually tested this bug, due to the seriousness of its implications, we don’t recommend trying it either. Now with that being said, some users decided to try it out for themselves…then later reporting they have a bricked device
To replicate the bug, you’d have to…
1. Go into Settings > General > Date & Time
2. Toggle ‘Set Automatically‘ to OFF
3. Then change the date to Jan 1, 1970
4. Reboot your device
While you’d never actually change your devices date to Jan 1, 1970, yourselves, jailbreak tweak developer, ziph0n, has created a tweak to prevent malicious users from replicating this ‘bug’ on your device.
Jailbreakers can install the tweak BrickingDate from the following repo:
Users that aren’t jailbroken and replicated the bug, out of curiosity or stupidity, would have the take their device to an Apple Store and get it physically repaired. Apparently reconnecting the battery fixes this problem.
Apple have yet to release a statement acknowledging this bug or an update to fix it