Jutley posted a guide to debranding but the file links are long since broken - I have donwloaded a couple of 'insecure' kernals which I did eventually manage to flash using Odin but could never get past the boot stage - I cleared caches etc (although they never quite seemed to be called what the instructions said !) - thought my phone was broken - eventually I downloaded what looked like a 'complete' OS for the phone from sammobile (I think) called GT-I9100_XEU_I9100XXLPH_I9100XXLPH_I9100XEUKH2.tar.md 5 - and it seemed to reflash my phone back to how it was when I got it (I think).
I would like to unbrand the phone and unlock the phone to use my '3' sim in - how do I go about doing that please. I have read a lot of guides and many many posts and have tried flashing the insecure kernal as detailed above - I would really like some help if possible as I have had my phone for 2 weeks but can not use it !
Any help much appreciated, thanks