I am using a samsung galaxy y and i have a problem with the wifi at school. First when i got my cell phone i went to school, connected with the wifi network using my username and password and it worked. Then later I updated my firmware using kies. Then next day i tried to connect it again but it just stood "Disconnected". Then i pressed forget and tried it again but it didn't work, but my buddy's iphone 4 worked. Then my buddy tried to log in with his account but it didn't work. I tried to factory reset my phone doing -Settings -Privacy -Factory data reset -Format SD card -Reset phone But it didn't work and my new firmware was still there. But non-password-networks like McDonalds are working, but i can't go to mcdonalds everyday. CAN SOMEONE PLEEEEEEASE HELP ME!!! And can someone tell me how to downgrade the firmware to the original.