How do I fix this weird problem on

How do I fix this weird problem on my device if I'm not sure which tweak is causing it?
Verify package compatibility: Check your installed tweaks to make sure they're compatible with your iOS version - look them up in Cydia to see if their package pages include compatibility notes. Also make sure your packages are from legitimate sources such as BigBoss, Cydia/Telesphoreo, ModMyi, and ZodTTD/MacCiti - because pirated packages frequently cause problems.

Reboot your device: Power off and power up your device just in case the problem was a temporary glitch. If your device is stuck on the Apple logo and won't boot up normally, you can do a hard reboot by holding both the power/sleep/lock and home buttons - the screen will go black, and you can release the buttons when the Apple logo appears.

Try no Substrate mode: The next option is booting with Cydia Substrate (Mobile Substrate) disabled. Do a hard reboot by holding both the power/sleep/lock and home buttons - the screen will go black, release both buttons when the Apple logo appears and immediately hold volume up button until you see the lockscreen. This can take upwards to 3 minutes or more. Holding the volume up button while booting disables Cydia Substrate and all tweaks that depend on it. At this "no substrate" mode, springboard will appear stock and tweak options will not appear under the Settings app. You can launch Cydia and uninstall the tweak that you suspect may have caused the problem. Reboot again without holding the volume up button to go back into normal jailbroken state.

Try uninstalling Substrate: A surefire way to fix a device that cannot pull out of a safe mode or a bootloop due to a misbehaving tweak is to boot into "no substrate" mode, launch Cydia and uninstall Cydia Substrate. This will remove all apps/tweaks that are dependent on Cydia Substrate so take note which apps/tweaks you may want to reinstall later. After the device reboots on Cydia Substrate removal, you may reinstall apps/tweaks one by one and rebooting after each install to isolate which app/tweak was causing the problem.

Post a question: If you've tried these steps and you still can't figure out what's wrong, feel free to post a question (including as many details as possible) and we'll try to help. Please note that JailbreakQA cannot help with problems caused by piracy tools, pirate sources, or pirated tweaks or apps, so if you ask a question involving piracy, we'll have to just close the question and advise you to remove them.

Contact the developer: If you do figure out which tweak was causing the problem, and if it seems to be a bug with that tweak, consider emailing the developer of the package to let them know. To do this: go to the package page in Cydia, tap "Author" at the top of the page, and write them an email describing the problem (ideally including the steps that make the bug show up).

Related FAQ answers:

How do I get my device out of "Safe Mode" (Springboard crashing)?
How do I fix a device that isn't booting up properly (boot loop, stuck at Apple logo, etc.)?
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answered 29 May '12, 05:40

britta ♦♦
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