Quote Originally Posted by kcscm View Post
i got k750i with r1dboo1 when i want to istall usbflash drivers
when i connect my phone to pc with xs++ then it giving a message FAILED OPEN i tried sevaral times but nothing happend what can i do
you should:
1. download usb driver from here
2. exit battery for 15 seconds and again put on mobile
3. running xs++ and press start
4. hold "c" on mobile and connect cable