please help

[dazzlet2003]

hi i have flashed a nokia 5110 with the flasher cable that connects to the lpt port.
and the nokia dct3 flasher by rolis programme
the phone version is 5.27
when the phone is turned on the display shows "insert sim card"
but whatever sim card i put in it says sim not accepted can you please tell me why this is and what i have to do to get the phone to accept sim cards again

thanks daz

[Romano1]

Man, you have to unlock your phone, cause you flashed it with locked flash file. Use Eeprom tolls to unlock it.