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FTM boot loop

Discussion in 'Android Devices' started by c0080900v, Jun 2, 2017.

  1. c0080900v

    c0080900v Newbie
    Thread Starter

    So, after a minor water leak my ZTE has been constantly boot looping to FTM. I've already Googled around, but I believe the minor water damage(s) affected/borked my volume and power buttons, those buttons usually and sometimes work and don't function properly sometimes...

    I've already tried volume down and power buttons together, as well as volume up and and power buttons together, and also just the power button, all during reboot attempts. It usually takes me a few tries to successfully boot instead of into FTM again like usual... Today it's taken me various countless reboot attempts since this morning up to this evening, it only booted once to the Metro PCS screen and it got stuck there, it's been countless FTM boot loop reboots after that..... Also, as I said, sometimes my buttons function properly, and sometimes they don't, so it's tricky for me to tell if my volume buttons are stuck or not when I reboot... Also, volume up and power buttons together just lead me to an empty black screen if that's supposed to boot me into recovery mode, I believe it's because of my badly cracked and damaged lcd/screen

    Is there any way to fix/resolve it?
     


    mightnotmakeitsyke likes this.

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  2. 5318008

    5318008 Well-Known Member

    With water damage and a smashed-up screen, honestly it sounds to me like a new phone is going to be the easiest fix.
     
  3. c0080900v

    c0080900v Newbie
    Thread Starter

    Oh, I know. As much as I want to, I'm almost all spent for the month already....
     
    5318008 likes this.
  4. COVFEFE

    COVFEFE Lurker

    If you're really against buying another phone, find some way to crack that rear cover off and bury it in a bag of rice. It sounds like water is shorting your hard keys somehow.
     
  5. c0080900v

    c0080900v Newbie
    Thread Starter

    The water damage happened like 2w ago or so... Would it be too late to leave it sitting in rice in hopes to try and save it?
     
  6. c0080900v

    c0080900v Newbie
    Thread Starter

    Accidentally quoted myself...
     
  7. COVFEFE

    COVFEFE Lurker

    After two weeks its not looking good. When water dries up on a circuit board, it oxidizes (white powder looking stuff), spreads out and starts shorting out nearby components. I think your phone's vol up/down keys are shorting out.

    It can possibly be fixed, but that involves cracking the phone open and using alcohol and cotton swabs to clean the oxidation. A bit involved....
     
  8. COVFEFE

    COVFEFE Lurker

    Forgot to mention that water damage destroys ribbon cables with thin gold plating rather quickly. Volume buttons are sometimes routed to the circuit board via ribbon cables, some are directly attached. I've fixed a lot of water damaged devices but unfortunately I've never opened up a Zmax. Opening the rear up and using rice will stop the damage from spreading, but will not fix what's already corroded from oxidation. So kinda will help, but won't.

    Water in a warm dark environment, like a sealed phone will not dry up quickly in theory... So the rice *may* help.

    If you have long fingernails, try wedging a thumbnail under the back cover starting on a corner. Guitar pick, butter knife will work too, but may nick the cover... Once under, slide thumbnail slowly around the perimeter of the case and see if it starts to open. DON'T completely remove the cover! You may damage fingerprint sensor. Just cracked open slightly is all you need for water vapor to escape. YouTube may also have a disassembly video that can help.

    Your call lol... I'd say 50/50 chance it works, if you're brave enough :)

    Good luck!
     
  9. COVFEFE

    COVFEFE Lurker

    If you do the rice thingy, please tell me if it works. Be sure to BURY completely in dry rice!
     
  10. messi2050

    messi2050 Android Enthusiast

    Adb works just fine in ftm mode , just issue this command ( adb reboot system ) and it should take you back into system
    Regards.
     
  11. c0080900v

    c0080900v Newbie
    Thread Starter

    My device still boots into FTM....
     
  12. Krlypumaa

    Krlypumaa Android Expert

    do adb reboot recovery  then reboot into system
     
    messi2050 likes this.
  13. c0080900v

    c0080900v Newbie
    Thread Starter

    Actually, I didn't do any of the rest of above and the FTM boot loop eventually stopped and went away on its own
     
  14. loonycgb2

    loonycgb2 Android Enthusiast

    Maybe because the volume buttons board has completely went out.

    If it works for you great!

    Hopefully you can fix or replace it soon when the money is good.
     
  15. c0080900v

    c0080900v Newbie
    Thread Starter

    I'm just going to go for a LG K20 next month and later relace the ZTE ZMax Pro's screen some other time
     
  16. allie66346

    allie66346 Lurker

    Okay so I have the exact same problem but mine is rather new and not cracked at all. Like there has been no damage done to the phone except what happened today, like an hour ago. I had it in my pouch on my hoodie while I was hiking, and my water bottle had been in there as well. Like I said this was an hour ago, is there any thing that could help me? if I put it in rice would it not be water damaged? Like it seriously is just switching from the FTM screen, to the ZTE screen to the Metro PCS screen. Its annoying and I'm trying to send out e-vites for a party this weekend.
     

ZTE Zmax Pro Forum

The ZTE Zmax Pro release date was July 2016. Features and Specs include a 6.0" inch screen, 13MP camera, 2GB RAM, Snapdragon 617 processor, and 3400mAh battery.

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