Download
navigation_bar_android.zipRename navigation_bar_android.zip to update.zip and copy to USB pen drive
Insert the USB pen drive into any USB port of the Q5/Q10 4K3D
From Launcher go to settings / Upgrade / Local Upgrade / Please Choose Drive: where update.zip is locate
Player is reboot and Android droid is show for few seconds and wait to start normal
Navigation bar is inactiv qemu.hw.mainkeys=1
If want to re-enabled navigation bar use this update.zip with restore button and paper clip, Navigation bar is set back to qemu.hw.mainkeys=0
Update with navigation_bar_android.zip not wipe your data/sdcard.