Following on from my previous post, If I flash the UK ROM on this page: http://devsrom4android.blogspot.co.uk/2011/10/t-mobile-samsung-galaxy-s2-stock-roms.html back onto my T-Mobile S2, will that cover me?
Do i also need to reset the counter somehow? (i think it's at something silly like 40 atm)
Grab checkfus from here http://fus.nanzen.se/
Then select Android in the drop down under "choose firmware" then GT-I9100 & finally UK - Tmobile in the 3rd box.
Once selected "check firmware" to the left & then an option to download it should come up.
If you are running a ICS ROM you can download triangle away to reset the counter to 0.