[Q] Phone has come back from repair with wrong software

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http://forum.xda-developers.com – Hi there, I have an HTC One X on the Orange network here in the UK. I sent my phone off for repair due to a bad screen. When it has come back 3 weeks later it seems to have been reloaded with T-Mobile software! My old Sim card will not work as it says it is network locked, and is askig for an 8 character unlock code. Orange say I need to send it away for repair gain to get this fixed, but I wondered if I could somehow change the software back to the standard UK Orange version suitable for this phone. I don't want to jailbreak it or anything like that, just get the Orange software o (HowTos)