hi guys, its my 1st post here so please don't take out on me if i made a mistake.
btw it take me a while to figure out the rules of this forum about having 10 helpful post before u can actually ask something from someone.
here is my question:
i have a htc one e8 (stock marshmallow 6 installed&Ulocked) and i start to hate its launcher and its themes i needed a new look on my device, so i found this lineageOS 9 on this forum, so i installed it and as far as i know, its working fine with some miner issue(music player&NFC).
but i don't like the red warning text on splash screen, which appear the moment i root the device or install the twrp on my phone(when i restore my original marshmallow, it disappears).
now i want to know if i can install the custom rom(lineageOS) on my phone without root or twrp??
and final thing is that i made a backup from my phone, (when i did install the lineageOS 16), can i restore it without the twrp?? cuz now i'm back at my original marshmallow 6...
thx in advance.