If you are trying to fix iOS 9 jailbreak boot loop issue on your iDevice then we will show you how to do it using No Substrate Mode, the useful feature of jailbroken iDevices that can truly save your jailbreak when you’re unable to turn on your device.
If you have been keeping with jailbreak history then that there are multiple Cydia tweaks offering different functionalities. But sometimes some tweaks can come with bugs that can make a jailbroken device irresponsible, or even cause what’s known as a boot loop, which is where your jailbroken device won’t fully boot back up and will show the Apple Logo forever. In such cases, most users in panic hook their device up to iTunes and restore it to factory settings. The only problem is, that it will clear your jailbreak.
To avoid this problem Saurik, Cydia developer, implemented a genius feature into jailbroken devices known as No Substrate Mode, that allows you to boot your device up without any instances of Cydia Substrate-based tweaks running in the background.
How To Fix Boot Loop On tThe jailbroken Device Using No Substrate Mode
To fix iOS 9 jailbreak boot loop issue on your device follow few steps below:
Step 1) Press and hold both the Power and Home buttons for 10 seconds until your iPhone shuts off and restarts itself.
Step 2) While your iOS 9 jailbroken device is booting back up, press and hold the Volume Up button until you see your Lock screen.
Now, you should have access to your device again. Note that as you’re in No Susbtrate Mode, none of your Cydia Substrate-based jailbreak tweaks will function and their settings will be missing from the Settings app.
Step 3) Now launch the Cydia app and uninstall the tweak that caused your boot loop issue.
Step 4) Now when horror the jailbreak tweak was erased, you can reboot your iPhone normally. The boot loop problem should be gone, and you can use your device as usual.
No Susbtrate Mode is really helpful tool for all jailbroken devices users that can be lifebuoy in situation with buggy tweak.