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).