How to find out if my iphone 3G is rooted?

[chortle]

I fooled around with jailbreaking my iphone a couple of years ago. At some point I tried to install Cydia, which choked. I spent quite a bit of time failing to get that working and then gave the whole thing up as a bad job.

Now I'm not sure if I rooted my iphone at all. How can I check?

I'd like to factory reset (wipe) my phone and start again to clean it up. I'll also need to find out which steps to take to do this preserving my jailbreak.

I paid my telephone provider (O2 in the UK) to unlock my phone for other networks. They did this by sending me an SMS. Will this unlock be lost if I root the phone? I'm expecting not, but best to check.

These are my phone details

version 2.2.1 (5H11)
Modem Firmware 02.30.03

The s/w is really old and no longer plays games from the istore. I think it is sub 3 (from memory).

 

[Applejuiced]

All you have to do is plug it to itunes and restore.
Then it will reset to factory firmware.
And once you have it officially unlocked by your carrier your iphone will never lock again and will accept any GSM sim.

 

[chortle]

All you have to do is plug it to itunes and restore.
Then it will reset to factory firmware.
And once you have it officially unlocked by your carrier your iphone will never lock again and will accept any GSM sim.

I lost the itunes installation when I switched PCs recently. So now I install a fresh itunes, save an image, and then factory reset from there?