[Q] SGS i9000 can't read sim and no IMEI?

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http://forum.xda-developers.com – My SGS can't recognize the sim card and has no IMEI number. I am not running on any rom but the official gingerbread. I have not used this phone for a very long time like about 5 months or more but the last time it works fine. There is also an instance that i activated the flight mode thinking it will fix the problem but it won't deactivate so i factory reset it and still can't recognize my sim. So how do i fix this? (HowTos)