Brand new - Boxed. (please note the seal is opened to unlock the handset and check content only)
24 month Samsung UK warranty. Proof of purchase provided. - this validates the warranty
Unlocked T-Mobile handset - unlocked to work on all networks. No logos on the handset, T-Mobile firmware.
Next working day: Every effort will be made to despatch the item on the same day via Royal mail next day special delivery if payment is cleared before 3pm. see feedback
my mobile text only 07535008008
Judging from the above, the company that sold you this phone appear to be flashing the generic,
OXA, firmware to T-Mobile handsets so that they are available to use on all networks.
However, this initial flash, by them, means that you cannot update your handset via Kies. The only way that you could do this would be if you restored the original firmware that was on the handset, probably T-Mobile if the above is to be believed.
This practice, by some vendors, of flashing generic codes to carrier branded phones in an attempt to broaden their market is only now coming to light as people are finding out that they cannot upgrade via Kies.
Your only options, I'm afraid, are to:-
1. Approach the company from whom you purchased your phone and explain the difficulties you have encountered by their, "unlocking".
2. Flash the ICS firmware of your choice via Odin.