Ask Different is a question and answer site for power users of Apple hardware and software. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have lost and found my iPhone 3Gs. But apparently someone tried to use mine or had some intent to exploit it, and now I am a little paranoid about my iPhone.

Fortunately, I have a very recent backup stored on my laptop and the iOS is up-to-date. I have looked up some references to wipe out the iOS and did factory setting recovery under DFU mode with an ipsw file stored in iTunes. Is this a true complete wipe out of iOS?

(I want basically jail-break and sudo rm -rf / style wipe out. I don't want any funky business such as malware or virus going on my iPhone...)

share|improve this question
up vote 2 down vote accepted

DFU is the lowest-level erasure that you can perform through iTunes. It will eradicate anything that may have been planted on your phone when it was lost. I'd feel safe if I went through the same process.

share|improve this answer

Take it to an Apple Store. They will gladly perform a DFU restore, they can also open the phone to inspect and see if there has been some physical tampering.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.