July Security Update - Samsung is no longer allowing you to downgrade software

[noahm]

Just an FYI, as the topic says... IF you update to the latest security patch of July you cannot downgrade your software again on your device.

This is because with the July update, Samsung has updated the fuse versions of Knox. It's a part of Knox's "RP" which stands for "Rollback Prevention".

The RP fuse version number is set when system software is initially installed and when specific updates occur. Once the RP fuse version number is set, it is impossible to revert back to legacy software versions.

You can read about this more here:

https://docs.samsungknox.com/admin/whitepaper/kpe/hardware-backed-root-of-trust.htm

[Liyoshiyona]

This is not my question, it was presented by you, I just answered it. But I am ready to prove this anytime, anywhere.

[Liyoshiyona]

Yes, I'm talking about flashing firmware, 98% of software issues come back to normal after flashing firmware, it's sad to talk to people like you who are not practical

[Liyoshiyona]

Brother, you know bit (binary)
Ex: android 11 u6
android 10 u6
U6 is the binary version, binary are same u6
It mean we can downgrade 11 to 10