Originally Posted by ThiagoRFA
Does anybody have an advice? Thanks.
Hmmm.. you have joined by the wrong phone (samsung) in the wrong (KNOX) time.
In the past, Sammy was giving the silent permission to do with the phone what you wanted to. nowadays, we have the Knox (in the recent bootloaders/ROMS incapable to downgrade).
Well, first step would be rooting. BUT, you have the choice between the Knox violation, privacy violation (kingo root) or not to root.
Read all of it. It may take more than one day. Make your choice WISE.
As the old Romans said: "Quidquid agis, prudenter agas and respice finem" what in free translation would be:
Whatever you want to do, do wisely, and face the consequences.