Unroot/Relock bootloader

[atech087]

I know Knox will stay tripped, but how do I unroot/flash stock? Using netflix was 50% of what I used this tablet for and now that they blocked root, I can't watch it anymore. I tried to use magisk, but it doesn't work at all for me on cyanogenmod. If anyone can recommend a rom that magisk 100% works on, without laggy videos in youtube/twitch/netflix, that would be awesome! If not, can someone link me a way to unroot/relock the bootloader so that I am able to use netflix again. I'm currently running cyanogenmod 12.1. Thanks!!

 

[Beut]

Just flash back the official ROM, your tablet status will be official but the Knox count won't change. Search sammobile for your model, if you can root then flash back official firmware is not a problem.

 

[atech087]

Just flash back the official ROM, your tablet status will be official but the Knox count won't change. Search sammobile for your model, if you can root then flash back official firmware is not a problem.

Can I use another country's official ROM? The US isn't on there

 

[Beut]

https://www.sammobile.com/firmwares/galaxy-tab-s/SM-T800/XAR/download/T800XXU1CPK2/129418/

Cellular South is US region, don't know why it comes with this name

 

[atech087]

https://www.sammobile.com/firmwares/galaxy-tab-s/SM-T800/XAR/download/T800XXU1CPK2/129418/

Cellular South is US region, don't know why it comes with this name

I have a T700

 

[Beut]

I have a T700

Region doesn't matter, I have SM-T580 runs Germany firmware, SM-P580 runs Korean firmware because both are Android 7.
You can take the Australia firmware. Fact you should know: all Samsung tablets sold around the world are the same tablets, the difference is software customized to certain region.
Open a tablet sold in Asia, it's the same as the one sold in US, if loaded with US firmware, it becomes an US tablet.

I have one US tablet with Google Locked, downgraded it to Hong Kong firmware to bypass Google Lock, then upgraded it Nougat with Germany or Korean firmware.
I doesn't matter which firmware I loaded as long as English is my language of choice. Every region, you see the CSC ( Customer Software Customization ) file along with the AP file, that's the difference.

 

[lev777]

I know Knox will stay tripped, but how do I unroot/flash stock? Using netflix was 50% of what I used this tablet for and now that they blocked root, I can't watch it anymore. I tried to use magisk, but it doesn't work at all for me on cyanogenmod. If anyone can recommend a rom that magisk 100% works on, without laggy videos in youtube/twitch/netflix, that would be awesome! If not, can someone link me a way to unroot/relock the bootloader so that I am able to use netflix again. I'm currently running cyanogenmod 12.1. Thanks!!

Apk 4.13.0 build 14540 works