HibyMusic bluetooth scan crash and a strange system freeze.

[Mount81]

I have never used bluetooth on the Box before, but this time I've accidentally started a scan for bluetooth devices in the HibyMusic app (installed from PlayStore), with it's "Hiby Link" option.  But during the scan, after a few seconds the app has crashed and quit to the launcher.  I've started it again and repeated the scanning and it resulted in a crash again. 

Another strange behavior: There's is a "hidden" and different version of the HiMedia File Browser that I've found somehow in the application list. After I've started it and begun to browse some folders it permanently freezed the whole system. I've tried all the buttons, but nothing happened, just when I've pressed  the Power button did it turn off the light indicator on the Box and the whole screen went suddenly black. And it remained stuck in this state   , even trying to Powering Off the Box didn't worked at all. I have to unplug and than replug the power adapter to get it working again. Than it just booted up fine again (at least I hope so). For curiosity, what is this "other" File manager app is supposed to do on the Box and why did it hang the system?

(This app has a slightly different, more colorful GUI than the "Primary" File manager and has some kind of multi colored circle icon.)