Galaxy S4 - Update kill root?

[silverfang77]

Does the current update break root if applied? Can the SuperSU app be backed up with Voodoo Rootkeeper?

 

[Golfdriver97]

Does the current update break root if applied? Can the SuperSU app be backed up with Voodoo Rootkeeper?

As far as I know, and I may very well be wrong, it does. To my knowledge, most backup apps can't backup a root app.

 

[prozacfield]

Yes, updates kill root unless you flash pre-rooted ROM, it always worked this way. SuperSU has an option to keep root after update, but i'm not sure if it works at all on newer KNOXed firmwares.
I personally decided to stay with my current firmware (MF8) and ignore future upgrades just because of that.