How do I know which upgrade I got OTA before installing it

[SbTwister]

My S4 came with 4.3 MK8 rom (AP i9505XXUEMK8, CP i9505XXUEMK8 and CSC i9505PHNEMK5). I have somehow gotten an update OTA even though I unmarked automatic updates for my device. This update is bugging me every hour of so, but I don't want to install it because I want to avoid updating tot Kitkat. I don't mind if it updates me to a higher Jelly Bean 4.3 version. I just need to be sure.
My phone is still unrooted because I just got it and need a safe methode to root without tripping knox.

My question is, how can I find out which update was downloaded? Where is it normalle saved ? It mentions that it is an update for stability and is only 16 MB big.
I lookup up the most recent update for PHN phones and this would update my S4 to Kitkat and then I would no longer be able to safely root without tripping the knox warranty.
I desperately want to avoid this.

Can someone please help me find out more about what I have gotten OTA ?

 

[Golfdriver97]

It probably is the update to get you 4.4. Most of the time, if you click on the notification, before it asks for permission to install, it should have a changelog describing what the update is. If the size is over 100 MB, it probably is the OS update.

 

[SbTwister]

This is the message I get, it's dutch, but you can see that it mentions 16 MB, no changelog. Just a mention about stability.

https://www.dropbox.com/sc/rbev8smtwdzl2b0/9NEnyWeSuC