Hi there wondering if someone can help. I have a iphone 3g on firmware 3.1 (So i'm told - but haven't self checked as the phone is locked to optus so i can; t put in a 02 sim and check normally ps is there another way of checking the version of firmware I have). I have been wanting to unlock it for use on an orange sim. However i can't activate the phone with an o2 sim as it is not from o2. I have been doing a lot of reading and it seems that the iclarified stuff is the best way forward. However they don;t do a JB for v3.1 on the pc bu they do I think for the mac. so i have 2 options. 1. I can pay a guy in north london who reckons he can do it or 2. I can try and do it myself using my friend's imac. (will this work and then enable me to connect back up to my pc and download my music to the phone or will it be locked to his i mac?) secondly will the software unlock v3.1. As far as i am aware this software on i clarified is only available with macs? are there any dangers ie permanently locking the phone if i mess up? shouls i just let the pros do it? finally I think i am right in saying I have to backdate the firmware from v3.1 to a more older versio before JB/unlock and i'm guessing this is all explained in the tutorial? thanks for your help and sorry about all the questions.