hy mu device is Samsung galaxy note 8

[Parthvyas]

I want my Knox security back again after rooting the device anyone knows how to get it back 

[indiantrueindian]

what happened to knox it couldn't be removed if you haven't rooted yoir device

[Parthvyas]

after rooting my device
i made a mistake without unrooting the device
i format my device

[indiantrueindian]

now the point is Knox e fuse has blown away and there's two way to get the knox back
1. get the official stock rom from any same device or from the web ( for your need i would provide you the link)

2. change the whole motherboard ( its would be high costly )

[indiantrueindian]

link is https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.sammobile.com/samsung/galaxy-note-8...

for India https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.sammobile.com/samsung/galaxy-note-8...

[indiantrueindian]

and if you like my answer please mark it as solution by clicking on the 3 dots present beside the answer

[Š]

Only way is changing motherboard.

[oyemukul]

knox is there, samsung pay, pass will not work

[Anikroyale]

No way to get it back.

[Parthvyas]

okayy