Which system do you use? Android, Ubuntu, OOWOW or others?
**Android.**
Which version of system do you use? Khadas official images, self built images, or others?
**Android 9 64Bit V231122**
Please describe your issue below:
How to set USB configuration to MTP (Media Transfer Protocol) on Android 9 V231122?
On Android 9 V231122 I can’t install app via ADB USB debugging, the USB configuration menu in Developer Option is disappear.
On Android Pie V211220, I can set USB configuration to MTP (Media Transfer Protocol) in Developer Option menu. Image below show the USB Configuration menu on Android Pie V211220