Working on my Android 7.1 device. Steps to get it working:
- Download the adbd insecure version by leroy at https://nofile.io/f/86605d8qsJs/adbd-Insecure-v2.00.apk
- Install on your phone.
- Run
adb shell
in your adb directory - Type
su
so u can get the "#" - Type
setenforce 0
- Enable insecure adbd. USB debugging turns off
- Turn USB debugging on and off from developer options
- Turn insecure adbd off and on again.
You can now adb pull into your PC.