Cannot get rid of root

[spierian]

I foolishly rooted my Galaxy S6 after 3 years of use. My phone then started reporting "unauthorised actions have been detected. Restart phone to undo these actions" This did not work. I then tried to unroot the phone using first kingo then a couple of other apps. All said "your phone is not rooted". But the security messages continued. Finally I did a factory reset - the security messages continued.

The practical effect is that my banking app refuses to work. Their helpdesk says it will not work on a rooted device.

Can anyone help me get out of this?

 

[Dannydet]

Re root and you'll need to find the stock rom for your phone Install twrp and use twrp to install the stock rom.

 

[Deleted User]

Some links to S6 stock firmware here:

https://forum.xda-developers.com/galaxy-s6/general/stock-firmware-official-stock-firmware-t3086387

 

[Jfalls63]

You should be able to flash the stock firmware with Odin if it is available for your model number.
If your banking app is only looking at root access, you might be good to go.
A lot of things have changed in the past few years. Rooting a Samsung device Tripps Knox Security and cannot be reset. Certain Samsung apps will not work even if you return to stock. Phone might not pass Safety Net check at the Play Store and list your phone as Uncertified.