How to fix badly virused android device - Your device has been modified, software updates are not available

Question

I have a Samsung Galaxy Note 10.1 that has been infected with some viruses really badly.



After factory defaults, as soon as it connects to the internet it starts downloading some apps and advertisement windows pop up like every 10 seconds.



Things I tried:




  • Installed AVG AntiVirus, CM serurity, Clear master




    • It helped me delete some files of the virus but did not solve the problem


  • Booted into recovery mode:




    • Wiped cache partition

    • wiped data/factory reset


  • Booted into Odin mode:




    • Product Name: GT-N8010

    • Custom Binary: Download: No

    • Current Binary: Samsung Official

    • System Status: Custom


  • Tried to software update




    • Message: Your device has been modified, software updates are not available.




What can I do to get rid of the virus and be able to software update normally?


— Divin3 | Sources

Answer

It sounds like you have it unlocked with a custom recovery. If so, use the custom recovery to install a new ROM for your tablet. Find your tablet on http://forum.xda-developers.com/ and you can find either a third-party (i.e. Cyanogenmod, etc.), modified stock, or even completely stock ROM such as this one: http://forum.xda-developers.com/showthread.php?t=2792979 .



If you don't have a custom recovery, you can find instructions on XDA to use the odin utility to install one.



Wiping the system and data partitions should get rid of the malware but you'll need a new rom to install. If you have an SD card you can put the new rom zip file on the card. If not, you should copy it to the tablet first.


— mikeatlarge | Sources

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