520      iPhone_iPad_Mac_apple

How do you uninstall an update on iPad 2

I have not synced with iTunes yet, and the app is no longer working properly. Is there any way to get the old update back?

You can't.

There is no Apple supported way of going back.

What app is not working?

Have you tried standard troubleshooting?

1. A Reset may cure some bugs. Hold down the Home and sleep/power buttons until the apple logo shows up.
   • If still not resolved:
2. Reset all Settings. Go to Settings->General->Reset->Reset All Settings
   • If its still not resolved:
3. Restore the device as new.
   https://support.apple.com/kb/ht1414

最后更新：2017-09-27 23:33:59

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