Unrooted After Factory Reset - Samsung Galaxy S5 Mini

I rooted my G800F using the Chainfire Odin Pack.
Then I factory reseted my phone and then the root was gone.
I still got the SuperSU app installed but root wasnt working.
I used root checker to test it.
I know that i can flash the stock firmware but i really want to do that only if nothing else works.
Thanks for answers.
:fingers-crossed:

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