LG G2 D802 not detect of adb

hello,

After long searsh for web, i don't not find response.
My device on adb but after unbriked, my device adb not detect.
My device is connect on MTP and USB debug.
In windows device manager go to USB -> LGE Mobile composite USB device and go to Port COM -> LGE Mobile composite serial port (COM3);
No showing the Andoid Device in Device Manager et no dectect in windows computer where is the hdd
My sorry for my english

Thanks for responses

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Unable to root LG G2 D802 4.4.2. 3.4.0

Hi All,

I am trying to root my LG G2 D802 (KitKat 4.4.2, Kernel 3.4.0) by using IOroot. I am getting the error:

Mounting system RW and pushing SU, then remounting system RO again
mount: Operation not permitted
failed to copy 'su' to '/system/xbin/su': Read-only file system
Unable to open /system/xbin/su: No such file or directory
Unable to open /system/xbin/su: No such file or directory
mount: Operation not permitted
Installing superuser
4371 KB/s (1468798 bytes in 0.328s)
pkg: /data/local/tmp/superuser.apk
Success

In addition I checked and the phone seems to be rooted (with a couple of apps).

1. Why am I getting these errors?
2. I tried to install twrp and it seems its installed, however I am not able to backup, I am getting a message its cannot mount system, data, etc..

Any ideas? Thanks

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