no service HELP

[selena stott]

HI I have a big problem i flashed my samsung s2 with odin to have 4.0.3 and since ive had no signal keeps saying no service i have done a soft and hard reset changed rom and firmware to try and get it back but what i've noticed it only work with a pin in the external antenna i used to have 4 bars of signal before flashing it but now so service has anyone please got any ideas ?? would be apreciated

 

[Meiji]

Hey Selena! Which roms and firmwares did you flash after ics? Try flashing KH3 2.3.4, that's the most stable samsung firmware. It should be fixed after that.

Note: Before flashing the KH3, when placing all the files, check also the Bootloader Update box in Odin. If after flashing it restarts with no problems then it's ok. Otherwise you might get red messages of 'Can't mount cache' something like that. If that happens then flash KH3 again, but this time without checking Bootleader Update. It should work fine after that.