I have a doogee X5 Max Pro. I put new firmware on it but it deleted everything on the phone. I do not want to install firmware via TWRP from altrom cos I don't know if it's legit. I would like to either backup my phone completely with TWRP or Titanium, but if I install an older or newer OS using normal methods I lose root and TWRP so unable to restore or use Titanium. So only other option is to take the Manufacturer zipped ROM file and pull and modify for TWRP. Anyone know if I can do that? Thank you.