Fisrt some introduction, I’ve been having some problems with my new phone, the Hisense HS-L691 or Sero 5, which has a custom android and some trash apps, I’ve normally worked fine on factory androids if they have everything i want which is not much, after a quick root and some deleting trash I encounter whith my first "big" poblem, the factory android doesn’t let me to fully control the volume of my device, which I know it can sound stupid but I can assure it’s been annoying, so I wanted to change the android version (maybe a 5.0 or a clean 4.4.4) I start to search and I find some tutorials which worked fine until I find out I need CWM, I didn’t know what was that (I know, duh) I start looking and I find out there’s no support on my device, I start looking some "universal" tutorials which didn’t work until finally I lost my mind.
tl;dr: Device’s android works like **** and I wanna change it but my device isn’t supported.
So I’m calling for help to anyone who can point me on the right direction, I don’t know how to code but I consider myself a quick learner if you give me the right resources (I woke up without knowing how to make a hard-reset)
I just need that little push, of course if someone can guide me on the process I won’t say no.
Thank you very much for your time, looking forward about your responses.