Hi, you will be glad you bought this phone. I don't think you will have to many issues running this phone as a DAP, the V10 as a whole had been the most stable phone I have ever owned.
The audio is better than any phone I have used, or tested, and it can do high quality FLAC and DSD tracks with ease.
The sound is really good on both power amp Alpha, and UAAP USB audio Pro players.
I believe, well in my case the phone didn't boot loop, but froze up with a software issue. And could not boot up.
And after resetting the device by doing an update (holding the volume up and plugging the V10 into a computer while in the off state, this will allow a software update/or install. Through a software package called LG bridge.
This is available at LG's websites, support area. No data was lost, the phone was how I left it after the software freeze up. Only updated.
Once I was able to update the software, to Android v6. The unit is running better than ever, has not skipped a beat, no heat, nil freezes, just a joy to use.
The sound from this v10, is really great to use with my ibasso IT03. And the usability and quality audio has improved a lot in ver 6.