Can I downgrade from 6.0.1 to 5.1.1?

Hello, recently I bought a SM-N920C and downgraded it to 6.0.1. Knox is not tripped and the warranty is still in tack until 2018. Is there a way I can downgrade to lollipop? Some people say it's possible with custom firmware, but I don't know how that would work and I don't want to trip knox. Thanks

James L

Android Expert
Yes it can be done provided your build doesn't have a anyone roll back feature. If you're not sure well then make a backup flash the correct 5.1.1 firmware, make sure you are using the correct firmware beforehand. Then flash it, if it has issues then flash back to 6.0.1

Knox remains intact when you use stock firmware.