Please help a newbie?

[niteowl]

Hi folks

Ive just bought a touch pro, locked to the T-mob network in the UK. I bought an unlocking solution and it worked fine, so now it's unlocked. My question is this, If i now do a hard reset will it put it back to the spec that it was sold to ie: back to locked onto T-mob?
Likewise, would the same happen if i flashed a windows 6.5 Rom onto it, im looking to do the usual typical things that most users of the touch pro do with their phones ie:get the most from it, but at the moment, am frightened i'm going to re-lock it.

I've done the usual search on the forums, but as my search string was so specific, it brought back so many results i wont dare touch my pro until ive finished reading which would be about easter next year !
Thanks
Dave