Hi guys, I'm pretty new here and am scared to try a lot of the stuff you are all talking about incase I do damage to my phone!!

I have been searching for answers to this but can't find any so hope you can help.

I have a UK 1.1.2 OTB which has been jailkbroken (not unlocked) and is working great on an O2 simplicity contract with a bolt on. Is it safe for me to upgrade to 1.1.3 via Nate or Devteam method so I can get multi-text, change front screen icons, google maps etc? The jailbreak was ok but if I move to 1.1.3 I don't want to brick my phone.

What is the easiest way to go about this for a UK phone and not an AT&T or US model?