Wi-Fi Problem in I9001 Galaxy S Plus with CM11 ROM I have recently installed [GT-I9001][ROM][ION][4.4.4][KTU84Q] CyanogenMod 11.0 by ADC-Team - Release 17 [EOL] on my I9001 Galaxy S Plus. But after a while I found that my WiFi can't find any router around. Flash and reset factory doesn't works. How can i fix that?
Finally found a solution:

Warning: You will lost all saved Wifi passwords!


Install Root Browser app.
After turning off WiFi, Go to /data/misc/wifi/ and open wpa_supplicant.config with an editor and delete network section until end of file:


// delete section:
    network={
        ssid="some wifi ssid"
        ...
    }

save and close file.


Open Settings->Wifi (don't turn it ON!)->Advance (three vertical dots in button right) and open Wi-Fi region code and choose one of them, for example United State. 
Now turn On your Wifi, so it should list all available networks around. Enjoy it! :)