Unhappy help! my x10 mini is not showing network

I flashed jb karnel using flashtools and my mobile was not going further after the karnel logo so i re-flashed the stock rom and karnel and now my phone says insert simcard !.it is not detecting any sim card in my phone i tried many sims but no luck.if anyone has a solution please help !
and i noticed that while flashing the stock rom there was a warning in blue colour saying that simlock.ta has been ignored is that have to do anything to do with my problem?