Adb shell not see my LG G4 - G4 Q&A, Help & Troubleshooting

I wanted to unlock LG G4 but Adb not see device , When I write "adb reboot bootloader" g4 turn into fastboot mode but when I Write "fastboot oem device-id" Nothing heppens, , I have installed the newest drivers and I have the Debugging mode ON , Any ideas what Can I do ?
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Related

ADB not see my device

I wanted to unlock bootloader on my g4 but adb not see my device , i have the debugging mode on and i have installed the newest drivers , yesterday all fine and today not see ;0 u have any ideas what Can I do ?
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Are you running Marshmallow? On my old G4, after flashing MM ADB wouldn't recognise device, but I installed ADB Insecure which fixed, try that.
If that doesn't help a quick search brings up this http://forum.xda-developers.com/g4/general/computer-finding-g4-adb-t3134407

[Help] Problem with fastboot

Hey!
So. I tried to fastboot with Flashy and TWRP in the same way I did with my Nexus 4.
However something has problem now I can not exit the screen (Image).
and when I try to use cmd way, it occurs to me this problem, "FAILED (remote: unknown command)" (image2).
Also tried the method http://forum.xda-developers.com/g-pad-10/general/guide-return-to-stock-t2919039
However it does not recognize the USB, but if I cmd in fastboot use a "fastboot devices" it appears.
Someone can help me?
Images Pad:
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Images CMD:
Thanks guys

[SOLVED] Can't enable USB Debugging

For some reason my resolution changed, see picture, and I can't enable USB Debugging, tried to flash TWRP I had bootloader unlocked when i first got the phone,and now wont boot to recovery and I can't use adb right now to change the resolution, any suggestions or i just take it to phone repair shop and pray?
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Just did factory reset by fastboot and its back

Problem with adb

Hi guys i just unlocked my oem lock with adb commands without a problem then i did a fresh install to my phone and then whenever i tried to install twrp (when the phone in bootloader) adb can't detect my phone. If my phone is turned on it is fine it can be listed in adb but when in bootloader it can't see my phone what may be the problem here?
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Red magic 5g how open oem ???

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If OEM unlock option is present but greyed in Settings -> Developer options then probably bootloader is already unlocked.
You may check this with this ADB / Fastboot command sequence
Code:
adb devices
adb reboot fastboot
fastboot reboot fastboot
fastboot oem device-info

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