Couple of months ago i installed SuperSU on Android 5 and some months later i updated to Android 6.0.1 september update.
I also used hvdwolfs Joying Extra Tools app to install the Sofia Server Mod so my Tasker is up and running automatic on every ignition.
All went well for some months but sometimes the standard video player has freezes from time to time and my music clips stored on usb stick were halting for some seconds and then continued playing.
I decided to update Joying Extra Tools to latest version (50) and look if there maybe is an updated SofiaServer Mod. I thought it must have to do something with that because after every fresh reboot it plays nice as it should. I installed the Mod again and then unfortunatly i tried to change the Joying Settings to Standard Android Settings via the Extra Tools app. But the installation of settings.apk hangs so i rebooted.
After that the mcu had some strange behavior. The volume rocker sign at notification bar was gone and i couldn't use my steering wheel keys.
Also the storage seems broken or so. I were not able to access files on usb.
First i tried factory reset and the device boots up with standard settings but problems still persists.
Then i put the update files from sept. 1. - 6.0.1 on fat32 stick but update failed.
On reboot it was stuck at command line and shows...
"E:usb volume for path [/mnt/usb_storage/5009_60.zip]
cannot unzip update file!
Error wait here..."
After some minutes the mcu reboots and same odd android with faults is up.
It seems something in android system is broken. I managed to use my phones hotspot to get wifi and downloaded / installed Joying Extra Tools.apk. The device still seems to be rooted but i'm stuck at this point now.
Also under device info it doesn't show anything other then "Unknown" for example the MCU Version...
Can someone figure out what i did to my mcu and how to fix this?