[Q] Had problem updating i9300 to JB - reset phone

Hi

So I have a phone with CSC as XSA (Australia).. I was playing with it and i wanted to install Jelly Bean and thought to go with BTU (UK) firmware

GT-I9300_XSA_1_20120828133028

Now I installed csc changer and clicked on BTU and reset the phone.. yes it wiped and came back.. but the CSC is KOR now and it does not like to go to BTU whenever I click it.. I can't even see XSA in the possible list

During Odin flash it got stuck on samsung logo and i had forgotten to backup my titatnium folder.. yes my fault.. i had to do a factory reset via 3e and lost it and basically lost all data.. it sucks..

anyways

1) I want to setup my phone back to CSC XSA or BTU

2) Install Jelly Bean in such a way that in future I can FOTA from UK perhaps as Aus release is dead slow (OR any other country which gets quick FOTA without bloatware)

As phone is completely wiped.. I have a chance to start fresh and clean

if you can suggest what I should do, that would be great..

I currently have 4.0.4 XSA ROM and 4.1.1 BTU ROM on my comp but can download any other as well

Thanks