I rooted my nexus one and successfully used a lot of root-only apps. But one day all these apps stopped working, saying I don't have root. Terminal emulator says "permission denied" for everything again, as if I wasn't root. But unlocked lock is still showed at startup. How would I fix that? I don't want to root again, because I will have to do a large backup then.

  • Are you stock or do you have a custom ROM? And if the latter, which one? – Matthew Read Dec 25 '10 at 3:54
  • Stock, not custom. Just rooted. – creitve Dec 25 '10 at 14:52

Did you by chance have an automatic OTA update? That would do it.

  • Probably yes. Do I need to root it again? Or what? – creitve Dec 25 '10 at 14:53
  • Yes,if you updated, you have to root it again. – NES Dec 25 '10 at 18:01

To avoid unrooting after OTA update,

  1. Open SuperSU
  2. Go to Settings
  3. Enable Pro (you have to purchase the SuperSU Pro from PlayStore)
  4. Enable Survival Mode

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