after flash wifi not working

FLASH INSTRUCTIONS:
1. Choose correct flash file(s).
2. If you have PIT file chosen, then you must check 'Repartition' option.
3. Check flashing options if needed (Repartition, EFS clear, Boot update).
4. Power on the phone in download mode (turn off phone, press vol.down + home + power).
5. Connect the phone to PC with USB cable, install drivers if needed.
6. Press 'Flash' button.

Operation: Flash
Selected model: GT-P5100
Software version: 30.9

File analysis... OK
Total file size: 0x621237E0 (1569 Mb)
Searching USB Flash interface... COM7 detected
Setup connection... OK
Set PIT file... OK
Reading PIT from phone... OK
Sending MLO... OK
Sending param.lfs... OK
Sending Sbl.bin... OK
Sending boot.img... OK
Sending recovery.img... OK
Sending system.img... OK
Sending userdata.img... OK
Sending modem.bin... OK
Sending cache.img... OK
Sending hidden.img... OK
Flashing done (time - 00:05:56)

Done with Samsung Tool PRO v.30.9