My HTC One X doesnt not show Jellybean Update though it is long out now!?

Hello!
Well, I have been dying to update my One X to the Jellybean OS but my phone simply doesnt detect the new firmware whether I set it up on Auto update or even when I try to manually check for the update. I have been doing this for past 1 month and all it shows is "no updates found for your phone" !
My phone is a UK version running currently on firmware version 4.0.4. But i am in Asia currently. I have a friend who also owns a UK version of HTC One X and his phone detected the update and installed it.
So could anybody please suggest me on this please?