[SOLVED] GT90H Demo On Screen

Discussion in 'Android Tablet Q&A' started by mlen51, Oct 12, 2014.

  1. mlen51

    mlen51 Junior Member

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    Complete novice here how would I remove the word DEMO in red across my tablet screen any help would be great thanks
     
  2. Traveller

    Traveller Super Moderator Staff Member

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    This may not work on your tablet, but try the fix in this thread and see if it works for you.
     
  3. Spider

    Spider Administrator Staff Member

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    Hi mlen51, welcome to the forum. Nice to have you as a member of Android Tablets. I'm moving your thread to the Android Tablet Q&A section for you, where more people are likely to join the discussion and try to help. Good luck!
     
  4. mlen51

    mlen51 Junior Member

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    I would love to have tried this but way over my head thanks may give it a go in the future
     
  5. mlen51

    mlen51 Junior Member

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    Thanks for your help I have used the file and that Pctech posted and it has fixed tablet no more DEMO on the screen thanks to all
     
  6. WangiAwesome

    WangiAwesome Junior Member

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    How did you solve the problem with the trojan that has infected the file?
     
  7. Traveller

    Traveller Super Moderator Staff Member

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  8. mlen51

    mlen51 Junior Member

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    Hi I checked this file with AVG before I used and also after it was installed it did not show up any Trogjan with me
     
  9. canopic

    canopic Junior Member

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    Help I have same problem on GT90H Tablet Android 4.2.2 [A23 CPU]
    I have also seen the solution posted for the Zeepad Tablet using a ZIP file, but I think I need a ZIP file for the GT90H. I assume this is what above user got from the PcTech and possibly a few instructions? Where can I get these or can they be emailed to me? If it is too big for EMAIL then I can Download it.
    Thanks - This Tablet got this Demo issue in Feb so it has not been useable for a long time. Is it correct to call it a Trojan? All replies appreciated.
     
    Last edited: Aug 1, 2015
  10. Traveller

    Traveller Super Moderator Staff Member

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    There is no zip file specific to your model number. The PCTech file is the one you use, and can be downloaded from his thread (link is in one of my posts above). If I recall, it's simply an APK file that you install.

    The file itself isn't a trojan, and the demo issue really isn't one either.
     
  11. canopic

    canopic Junior Member

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  12. canopic

    canopic Junior Member

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    Thanks a lot for your reply. The ZIP file I found is called SystemPack.zip and is the one used to fix this issue on the Zeepad. It is a 1GB file, so its too big to be an android system patch, so I think it must be a complete android v4.2.2 operating system. Am I correct? I like to work from a position of understanding. It IS an .APK file whatever that means.[I just understand it is some kind of compressed android archive.] Will it completely replace my [infected?] android system?
    If this is an android OS, how can I find out what version of kernel it uses? If the kernel is older or newer might it be incompatible with the firmware drivers, or are they all part of the APK also? I asked my question about Trojans because I found this WARNING on an android developer site concerning Chinese APK images for a range of Tablets. It appears to give some insight into what the cause of the Demo problem really is and what one is dealing with. I Quote:

    "Most of images provided by chinese developers contain trojan called CloudService.apk

    It is known to download some other files from the internet, ping to chinese servers providing some information about device etc.

    After removing it without modifications to system there will be big red DEMO overlay on screen.
    More information: http://www.techknow.me/forum/index.php?topic=8572.0"

    This seems to say that the Demo problem is caused by removing the trojan, which makes me worry that the fix may be being achieved by putting the trojan back. Can I be sure that the file SystemPack.zip is not putting it back? [If it was created from a chinese APK image possibly downloaded from a chinese site - then it could easily contain the trojan] Cheers.
     
    Last edited: Aug 2, 2015
  13. Traveller

    Traveller Super Moderator Staff Member

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    You misread the size of the file. It's 1MB, not 1GB, and thus it's one-thousand times smaller than you think it is. If the APK were to restore the trojan, then I would have deleted it long ago. In fact, multiple virus engines have found no problems with the file itself, as mentioned upthread. However, if my word isn't sufficient, then decompile the app using Virtuous Ten Studio and look at it yourself.
     
  14. canopic

    canopic Junior Member

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    You are absolutely right! I did mis-read size of the file, and of course that changes everything. Sorry for the mistake. My only excuse is I have very bad eyesight and have to read everything on PC screen through a powerful magnifying glass. So again sorry. Your reassurance is I think enough and I will try using this 1 MB file and let you know the result. Cheers.
     

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