Issue with wifi after update on Ubuntu

I have old netbook power by atom and gma500, the OS told me to update the software for it. After I done with update and the Wifi stop working, it keep search for a while (repeat all the time) sometime it already found but chromium not able connect to internet. I check other devices and all are work fine. I am not happy with it because old quote said "if it work, don't fix it" I tried figure out what go wrong, no error, nothing. I believe update screw up my wifi, please help. Thanks.