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How can you erase Android os off tablet and reinstall a new os using a computer or micro SD card

Discussion in 'Android Devices' started by Wesleyscott, Aug 9, 2019.

  1. Wesleyscott

    Wesleyscott Newbie
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    How can erase Android os on tablet and add new os using computer, phone or micro SD card
     

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  2. Hadron

    Hadron Smoke me a kipper...
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    What new OS?

    If you mean a new version of Android, then just use the menu to check for updates. If you mean a custom build of android you will need to unlock the bootloader, install a custom recovery and use that to install the custom android ROM. Whether you can do this will depend on what tablet you have (can it be unlocked, is there a custom recovery or ROM for it?).

    If you mean an operating system other than android, forget it.
     
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  3. Wesleyscott

    Wesleyscott Newbie
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    Here's the problem The tablet is locked you can't add apps or anything no Bluetooth or WiFi to connect.You can see the tablet as a drive when u connect tablet to a computer.Im not too familiar with boot loader but I can assume this is needed for you to be able too boot into too add a Android os.From a computer how do I bypass or enable boot loader or can I just format the tablet drive letter that's the tablet and just copy all the files of the another same exact tablet that works and if so what tools I need
     
  4. Hadron

    Hadron Smoke me a kipper...
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    That's not how it works. If the bootloader is locked down enough you can't do that, and if not in most cases you need to enable unlocking from the tablet first. And if there is no custom software for that model you are stuck (the OS has to be built for the specific model: there is no such thing as a generic build you can install on any mobile device).

    From what you say though custom software may not be needed. Reflashing with manufacturer stock software may suffice. But that also depends on what tablet it is.

    So either way nobody can help without knowing what tablet it is & what OS version.
     
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  5. Dannydet

    Dannydet Extreme Android User
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    Why is the tablet locked to begin with?
     
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  6. mikedt

    mikedt 你好
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    Is this about one of those Jpay prison issued locked tablets? We've been getting a few posts about them quite recently
     
  7. Wesleyscott

    Wesleyscott Newbie
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    it's a jp5 tablet .
     
  8. Wesleyscott

    Wesleyscott Newbie
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    I have a jp5 that is not locked .Is there a way too erase the locked tablet and copy the unlocked tablet info.or say create a backup on the unlocked tablet and use it on the locked tablet
     
  9. Wesleyscott

    Wesleyscott Newbie
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    It was on a network and you can't Bluetooth or WiFi
     
  10. Wesleyscott

    Wesleyscott Newbie
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    Yes o bought 2 from a friend m inexperienced .help if you can if I have a working tablet Identical can I create off the unlocked tablet a custom rom and remove bootloader with a. Software app like windroid
     
  11. Wesleyscott

    Wesleyscott Newbie
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    Yes it's locked out of everything.but u can add a file using a computer. That's it.The computer sees the tablet as a drive letter and u can navigate. Too any folder on the tablet
     
  12. Wesleyscott

    Wesleyscott Newbie
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    Yes bought a unlocked one and a locked on exactly the same.the unlocked uses Android 5.1.1 and works like any other tablet Bluetooth wifi ect
     
  13. svim

    svim Android Expert
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    Just looking up JPay online, it's a privately owned, for-profit service and its tablets are highly curated with restrictions on functionality. They're by design meant to provide only limited tasks that they manage.
    https://www.motherjones.com/politics/2018/10/tablets-prisons-inmates-jpay-securus-global-tel-link/
    https://en.wikipedia.org/wiki/JPay
    If you really want to flash a new, clean Android ROM onto it, you're going to have to obtain one from JPay which doesn't seem likely given that making ROMs for their tablets open to the public would be something that opens up a big hole in their business model.
     
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  14. Wesleyscott

    Wesleyscott Newbie
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    D
     
  15. Wesleyscott

    Wesleyscott Newbie
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    so if you have a unlocked identical jp5 that's works can't you make the custom.rom out off that tablet and erase the bootloader using windroid
     
  16. mikedt

    mikedt 你好
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    Not only their business model, if these secure JP5 tablets were cracked. I think that would cause a serious security issue for the prison authorities, with inmates installing VPNs, encrypted messaging apps etc.
     
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  17. mikedt

    mikedt 你好
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    "windroid"? Do you mean nandroid? To do that you'd need a custom recovery like TWRP specifically developed and built for the JP5. And before that you'd need to find a way into the thing, to bypass its security features. Good luck with that.
     
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  18. svim

    svim Android Expert
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    The bottom line is these tablets don't appear to be the best option for hacking. If you're doing this to achieve some goal that's a different matter but if you just want a tablet to delve into and experiment with, take a look at swappa.com. They sell pre-owned and refurbished mobile devices, there are some really good bargains for old, brand name tablets:
    https://swappa.com/buy/tablets
     
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  19. Hadron

    Hadron Smoke me a kipper...
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    If both had the same custom recovery installed you could create a nandroid backup of the ROM of one of them and load it on the other. But you need to be able to unlock them both and install a custom recovery (which must be built for that particular model) - if there is no unlock mechanism for this model or nobody has built such a recovery this is not an option. And this only copies the ROM, if anything is locked down at a deeper level than that a nandroid won't help.

    Erasing the bootloader would hard brick the device. Fortunately unless you can unlock the bootloader first there is no way of erasing it.
     
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  20. Wesleyscott

    Wesleyscott Newbie
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    I no expert there a program called windroid I never used it but says it can unlock the bootloader from a Windows computer.Has anyone used this program .
     
  21. Hadron

    Hadron Smoke me a kipper...
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    It's ancient, and no longer supported. Even when it was new it relied on manufacturer unlocks for many devices.

    Basically you can try it, but don't get your hopes up. And unless there are custom recoveries and ROMs for this device it won't be able to do what to OP wants anyway.
     

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