S21 debrand 3 phone with btu firmware

[Beans on toast Dave]

How do you debrand a s21?
In the past iirc it was just a case of flashing BTU Non carrier specific firmware
Now if I do the same the phone refuses to boot until I reload the branded 3 firmware back on
What do I need to do to put the non 3 firmware on?

Thanks

 

[Orcvader]

Might be best to ask on more specialised places like XDA forums. I have a feeling Knox may have made things a little more difficult.

 

[FlyingFish]

How do you debrand a s21?
In the past iirc it was just a case of flashing BTU Non carrier specific firmware
Now if I do the same the phone refuses to boot until I reload the branded 3 firmware back on
What do I need to do to put the non 3 firmware on?

Thanks

I'm fairly certain you can do that without tripping knox, as you're not rooting the phone. The only thing you cannot do is go back to an earlier bootloader version. So whichever version you are on now, you have to get the BTU version at least the same or later. But yeah XDA is the place to ask.

 

[Beans on toast Dave]

thanks for the replys, have asked at xda but no replys, its more helpful here