Problem after updatig firmware on k750i

Posted by Repa
My phone is K750i and his firmware is R1AA008. After readin yours forum i update firmware to R1BC002 with Sony Ericsson Update Service II.After updating he works very good but bluetooth not working!?
I can recive files,but can not sent any file.Why?
Pleace help me!!!
Thanks

Posted by Vicser
Try Master reset or re-flashing via SEUS

Posted by zoman
Try update your Bluetooth Dongle driver!!! Try use WIDCOMM driver for it.