As the title stated, I couldn't get the wifi to work at all. I tried flashing both stock and custom roms, but I still couldn't make it work. When I slide the wifi "on", it immediately slides back to "off". It didn't even scan for networks. Does anyone know what is the cause of this problem and how can I fix it? The last working custom rom I used was the Infusion rom. Right after I install the stock firmware, the wifi no longer works anymore.