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how to retrieve an image out of a tablet with all the data & apps

Discussion in 'Android Development' started by Jasmin74, May 14, 2019.

  1. Jasmin74

    Jasmin74 Member
    Thread Starter

    Hello,

    is there a tool to retrieve a full image out of the tablet with all the data & applications?
    and another tool to flash the tablet again with this image?
     


    #1 Jasmin74, May 14, 2019
    Last edited: May 14, 2019
  2. mikedt

    mikedt 你好

    I believe it's called a nandroid backup. But the device must be rooted and have a custom recovery installed, like TWRP. If that's available or not, all depends on what the tablet is, make and model.
     
    ocnbrze, Jasmin74 and Dannydet like this.
  3. Jasmin74

    Jasmin74 Member
    Thread Starter

    Thank you,
    All this is available , the tablet is samsung Tab A 2016 - (SM t580)
     
  4. Jasmin74

    Jasmin74 Member
    Thread Starter

    But will it backup system data + apps + regular data??
     
  5. Hadron

    Hadron Smoke me a kipper...
    VIP Member

    A Nandroid will back up the ROM (system), apps and app data. It doesn't include an image of the user storage, but you can copy that stuff over USB (also since it might be stored on that volume itself things would spiral out of control quickly if it made an image of that volume!).

    I don't know about availability of any of this stuff for that device. I'd start by looking for a forum for that device at xda-developers. I'd also recommend making sure you are familiar with what is needed to install it before trying, and backing up first. In particular find out whether it's possible to do this without wiping the device in the process (official bootloader unlocks usually wipe the device, though Samsung don't provide official unlocks anyway).

    The other question I'd ask is whether this is really what you need? There are other ways of backing stuff up that are simpler, if less complete, so it really depends on what you require.
     
  6. Jasmin74

    Jasmin74 Member
    Thread Starter

    Thank you, the point is that i have to make almost 40 tabs containing the same data & app.
     
  7. Hadron

    Hadron Smoke me a kipper...
    VIP Member

    Hmm, a Nandroid restore could do that but do you want to modify the system software of 40 tablets to do this? Each and every one will need its recovery module replaced by a custom recovery for this method to work. And none of them will have a warranty after doing this.

    (I'm assuming they are all identical models - this method won't work otherwise).
     
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  8. mikedt

    mikedt 你好


    Sounds like fleet management you might be after, and will probably be much easier for you. And Samsung does have an MDM system for that.
    https://www.samsung.com/us/business/solutions/topics/device-switch/
    Secure, and no voided warranty
     
    tube517, ocnbrze and Hadron like this.
  9. Jasmin74

    Jasmin74 Member
    Thread Starter

    Thanks, yes they are identical.
     
  10. Jasmin74

    Jasmin74 Member
    Thread Starter

  11. mikedt

    mikedt 你好

    "almost 40 tabs containing the same data & app."

    I presume this is for a company or other enterprise?
    Quite frankly I think Samsung MDM is what you need, to easily and safely, load, configure and keep all those Galaxy Tabs with all the same apps and data.

    ....otherwise, good luck you're on your own.
     
    #11 mikedt, May 15, 2019
    Last edited: May 15, 2019
  12. Jasmin74

    Jasmin74 Member
    Thread Starter

    Thanks ..yes I think so.
     
  13. Jasmin74

    Jasmin74 Member
    Thread Starter

    Here you go the solution, if anyone needs it one day :

    The best way is to install TWRP make a backup and restore this backup to ur tablets one by one using a usb key i do 3 to 4 at the same time,

    First of all:
    I like to use an ssd usb key to put my backups on, because they are pretty fast(for mass production)
    When you create your backup, ONLY use /SYSTEM and /DATA partition.

    What i do for mass production with twrp is I setup my first tablet with all the settings i want then i backup this tablet.
    Then for the next tablet, you note the serialno with this adb shell command: getprop ro.serialno
    Then you go in the backup folder you just did -> /TWRP/BACKUPS/SERIALNO and you change the serialno with the one you just noted from your new tablet.
    it should look like this(16 alphanumeric serial no):52XXXXXXXXXXX4e1.
    I have a small .bat file that does this manipulation for me.

    Then boot your new tablet in twrp, go in Restore and select your usb storage or internal depending on where your backup is stored.
    Boom it appears!
    This method is good only if your flashing on the SAME exact model of tablet, so be careful.
    I used this method for more then 500 devices as of now.
     
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