Help Factory reset hangs up

[kheck]

I'm trying to factory reset my phone after installing an app from a website that seems to be malicious. When I select factory reset under options and confirm, it sits on "unmounting internal memory" and wont progress further. I also tried doing this from the fast boot menu and it didn't finish after 2 hrs. Is there a manual reset that I can do? I went to my local retail store and they said the phone is too new for them to be able to do anything.

 

[PhilD]

you should be able to return your phone back to stock using this technique, i had to do the same on my phone for a different reason, but do some research first before you make any decisions

 

[LrdAnkh]

You should tell us what the app was so we can avoid it if indeed it is malicious, by the way I have used that step pointed out above and it works well.

 

[kheck]

I believe the app is called Gameboid. There is a version on the market but its "recommended" to get it from a different source. After downloading, my RAM was being used much more than usual so I uninstalled it and the issue didn't go away.

Thanks for the link. I did a little bit of research on that process but didn't try it due to the risk.