WI-FI and Bluetooth is not working!

Hello! People please help. I'm not working WI FI and Bluetooth. He rarely worked after a successful restart on cyclic sink firmware 4.2.2. I'm sick of this, I decided to reboot and flash it on a stable firmware version 2.17. But why is the drain is not working 2.17 NFC WI fi Bluetooth. Then again I pierced it at 1.12, 1.14, 1.17. But there again repeated cyclic restart, but it is not working WI FI Bluetooth, NFC for work. I can not understand the smartphone fully working, why stop vayfay and bluetooth does not work? Read all forums and many of the same problem with not working Wifi and Bluetooth. Prompt, whether there is a solution?:смущенный: Smart SONY XPERIA L