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How to Fix Boot Loop of Death After Using Pangu iOS 9 Jailbreak

As you might already know, the iOS 9 jailbreak have been released last week. It was brought to us by none other than the Pangu Jailbreak team. But being the first ever jailbreak for iOS 9, it seems that it’s still quite rough around the edges. Specifically, users have been experiencing a strange “Boot Loop of Death” (BLoD) issue after jailbreaking their device using Pangu.

How to Fix Boot Loop of Death After Using Pangu iOS 9 Jailbreak

What is this Boot Loop of Death (BLoD) issue?

Cydia develop Karen, better known as angelXwind have expounded about this on a Reddit post. She describes the BLoD issue as one of the two things:

  1. An extremely rare (0.4% chance) variation of the Pangu9 boot failure described above — where instead of the device rebooting seconds after the untether fails, the device would just hang at boot — for about 10 minutes — until the watchdog forces a reboot.
  2. A respring loop caused by a Substrate tweak.

What could be the cause of this? angelXwind explains:

My theory is that unclean shutdowns are, if not the cause, a contributing factor to BLoDs. I'm saying this because I've seen a lot of people get into BLoDs just by performing unclean shutdowns. What's an unclean shutdown, you ask? An unclean shutdown is a device shutdown that does not properly unmount the HFSJ+ filesystem on iOS — this can be holding Lock and Home to force a reboot, or even a kernel panic can cause these.

How to Fix Boot Loop of Death After Using Pangu iOS 9 Jailbreak:

If you are already jailbroken, here’s possible fix to avoid this ongoing issue as per /u/Leyla232 of Reddit:

  1. Put you iDevice in DFU mode. Follow the steps below:
    • Hold down Power (corner) button for 5 seconds.
    • Without releasing the Power button, also hold down the Home (bottom center) button along with the Power button for 10 seconds.
    • Without releasing the home button, stop holding down the power button for up to 15 seconds.
  2. Restore using iTunes. NOTE: You might want to perform a backup first before restoring.
  3. After restoring, setup the iPhone or iPad, enter Wi-Fi password, enable location but skip Touch ID, Passcode, and iTunes / iCloud ID.
  4. Jailbreak using Pangu, you can use our guide here.
  5. Disable Airplane mode and launch Cydia for the first time. Just let Cydia do its thing.
  6. Open Cydia and install Cydia Substrate. Let Cydia respring your iDevice.
  7. Turn off the device (Swipe to power off). Turn it back on. This is a crucial step that will make or break your bootloop issue.
  8. Reboot the device using the Power and Home button. If this works, then you are good. You can now restore to your most recent backup.

Let us know if this guide has helped you fix boot loop of death issue with iOS 9 jailbreak.

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