Messed up LG Optimus p500h

[thegame]

I think I somehow bricked my optimus one by trying to root it. I first used z4root and after I rooted it, the phone rebooted and couldn't get signal from Telus for 15 minutes. I tried to factory reset the phone too but it didn't help. Now everytime I reboot the phone, it needs 15 minutes until I get service, so annoying. I hope I didn't damage the sim card or partically brick it.

Anyone have a solution? :-\