Originally Posted by Joku1981
Firmware seems ok and you have wifi how I see. It isnt normal that ur phone haven't wifi and other phones yes. Wifi antenna can be broken or maybe is about config of the router.
I don't think it's a hardware issue if it's only since his update.. to much of a coincidence for my taste.
From what I now, these antennas are very very sensitive. Is your phone using any sort of custom software? (kernel, recovery, ROM etc..)
I did a bit of googling and this issue is somewhat known. Advice there was to factory reset your device.