Unhappy [Q] How can unlock my sony xperia T worldwide

Hi everybody,
please help me i bought on uk shop online a sonyxperia T sim FREE, and i used in europ without problems with different brands, vodafone, orange, TIM. etc.etc.
but now i mouved in Dubai and i Bought an United Emirates SIM Card and my phone doesen't work, it's work if i still use an european SIM but by roamin, but if i insert teh UAE Sim doesn't work.
i can't unlock by insert code by emai because the counter showing ZERO,
so what i can do? i can flash reprogramming or do something for be free worldwide because i travel a lot???

i wish somebody can help me, regards