I have a phone that's off-brand, from a chinese company I believe with the brand "JHM" on the back.. It runs Android 5.1 Lollipop and the ROM that came factory installed on it has adware built in and it slows down the phone tremendously.. I have a screenshot of my phone model info attached if anyone can point me in the right direction of the stock ROM for my phone.. I appreciate any replies and help, thanks!
imgur(dot)com / e3fTb1v
(I'm a new user so that URL needs to be fixed before you can see it)