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Droid says not to turn off target but nothing happens

Discussion in 'Android Lounge' started by jjs211, Jan 12, 2019.

  1. jjs211

    jjs211 Lurker
    Thread Starter

    Samsung Galaxy Tab Pro 8.4 has the following message:
    Could not do normal boot.
    Ddi : mmc_read failed
    Product name: SM-T320
    Etc.etc. ..........
    UDC Start

    Droid Icon center on screen and has "Downloading… Do not turn off target!!" below it.

    It has been hours. What should I do? Wait forever? What if I try to reboot?
     

    Attached Files:


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  2. lunatic59

    lunatic59 Moderati ergo sum
    Moderator

    That's simply a message that you have it in download mode and it's waiting for input from Odin. If you try and reboot, it will probably bootloop back to the same screen. You might try fixing it with Samsung's smart switch emergency recovery.
     
    Jfalls63 and Milo Willamson like this.
  3. Milo Willamson

    Milo Willamson Android Expert

    Odin google your model number, find exact softwear to your phone. Took me two solid weeks on getting the right number for my old Droid Turbo. Turst me, you honestly do not want to shut it down just yet, it will be quick when you get it to Odin, a few clicks and it should be okay.
     
  4. jjs211

    jjs211 Lurker
    Thread Starter

    Thank you all for helping. Mine is back alive. So much to learn about android.
     
    Milo Willamson and lunatic59 like this.
  5. lunatic59

    lunatic59 Moderati ergo sum
    Moderator

    Glad you got it working. Did you have to flash anything or was it simply a boot glitch?
     
  6. aio developers

    aio developers Android Enthusiast

    YEP many things to learn :p
     
  7. Milo Willamson

    Milo Willamson Android Expert

    Welcome and it saves you a bit of headaches :D
     
  8. svim

    svim Extreme Android User

    Since you're up and running normally again this is after-the-fact and mostly out of curiosity but were you actually attempting to do some kind of maintenance/administrative task in particular or did this just happen spontaneously?

    t would be odd if your Tab started up in its Download Mode on its own. typically you need to start it up while simultaneously holding down the Volume Down, the Home, and the Power buttons. See below:
    https://www.hardreset.info/devices/samsung/samsung-t320-galaxy-tabpro-84-wifi/download-mode/
     
    MoodyBlues and Milo Willamson like this.
  9. Milo Willamson

    Milo Willamson Android Expert

    Yeah really why would they tampered with that stuff?
     
  10. jjs211

    jjs211 Lurker
    Thread Starter

    In my case the tablet rebooted normally. I believe I lost power and received the message before it really started the downloading process (I had started charging the tablet due to low battery and soon afterward switched power strip the charger was plugged in right before I noticed the message on the screen). I wasn't doing any downloading/upgrading. Samsung never provided any upgrade to this tablet. It still runs android 4.4.2; most current apps won't even install on this tablet.
     
  11. svim

    svim Extreme Android User

    As long as it's running OK now perhaps that was just some odd, one-off glitch that prompted it to boot up into its Download Mode. Just be sure if there's anything saved on it that you've got all your data safely backed up in case there is some underlying problem.
    Download Mode is typically something that's needed for a specific task, but it is a common issue for a Samsung device to reboot itself into its Download Mode when the Android OS gets corrupted in some way. But again, it could have been just a one time thing. If it does happen again though, that does indicate a problem.
     
  12. jjs211

    jjs211 Lurker
    Thread Starter

    You experts are so right. It booted into download mode repeatedly this morning. Was able to boot normally just now and had it all backed up. Waiting for the worst (hardware problem?).
    Will flashing a new ROM help? Does anyone know of a link that has detail instructions to root the tablet and flash a ROM?
     
  13. lunatic59

    lunatic59 Moderati ergo sum
    Moderator

    This seemingly random bootloop and then being able to boot normally would indicate to me that part of the memory is failing. Some days it works, others it doesn't, but eventually it will fail and then no amount of flashing will be able to fix it. :(
     
  14. svim

    svim Extreme Android User

    Well, flashing the ROM will fix an issue if the operating system is corrupt. But if it's a hardware problem, time to start shopping around for a replacement.

    But to flash a stock ROM go here and select the ROM that matches your country and carrier:
    https://updato.com/firmware-archive-select-model?exact=1&q=SM-T320
    Be sure to select the appropriate one, ROMs are not interchangeable
    For detailed instructions on the process go here:
    https://updato.com/how-to/how-to-install-an-official-samsung-stock-firmware-using-odin
    This process does involve using a Windows PC.
     
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