this bug affects not all iPhone . we are currently working on the solution.

Setting the date of your iPhone to January 1st, 1970 will brick your device, according to users across the web. The bug will affect any 64-bit iOS device that is powered by the A7, A8, A8X, A9, and A9X. 32-bit iOS devices are reportedly not affected by this issue.

Once your date has been set to January 1st, 1970, the bug will prevent your iOS device from booting. Due to the limited scroller, the date needs to be set back multiple times until it reaches the year 1970. Since a DFU or recovery mode restore will not unbrick your device, we strongly recommendthat you do not try to test this bug. Users report that while a restore may succeed, the device will still fail to boot after the restore.

The bug is suspected to be related to the UNIX timestamp epoch. Due to time-zone settings, the date is causing a bit-underflow, which crashes the kernel.

Hopefully Apple will release a software update that fixes this and unbricks any devices impacted by this bug.