I have a Boost Mobile HTC Desire 626s. I just upgraded to a ZTE Warp Elite. When I 1st got the HTC phone I got the phone rooted. The phone worked fine except for 1 annoying problem. Every few days a bar would popup saying a "system update" was needed. The only 2 options were "later (as in doing the install later)" and "install". I keep hitting later. I got tired of seening that popup every few days so I hit install. Big mistake. The phone is now stuck in a sys update loop. It says download complete, starting to unzip the file. But the unzip does nothing then error's out after a while. I spoke to Boost Mobile today. And even bigger mistake. All the hard master reset did was wipe out my pictures, phone list and so on (all that stuff is backed up on my laptop already, no lose there). But the hard reset didn't fix the system update loop problem. And now the phone is stuck in a basic phone activation loop as well. I am trying to setup the phone so my nephew can use the phone like a tablet for now. And if he keeps his grades up in school I will activate his phone on my cell phone plain with his own number. If I can clear up this mess and get the phone working right again.
I 1st used the unlocker that I found on the HTC web page, then I used Kingo Root to root the phone. The factory reset line is missing from the download mode. Also if I go to bootloader > boot to recovery mode. The phone boots out to normal phone mode. I am stuck and I don't know how to fix this. A point of interest I an a Windows tech. I have been fixing Windows based laptops and desktops for years as well as 2 way radios and tv's.