How to reinstall latest S8+ firmware without tripping Knox

King Mustard

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Mar 27, 2011
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Since purchase, my S8+ (which shipped with Android 7.x) has updated itself to Android 8.x and Android 9.x.

Due to all the upgrading, it's not feeling as smooth as it could.

I am wanting to starting afresh but I presume 'factory reset' isn't as good as reflashing the firmware?

If this is true, how can I reinstall the software without tripping security software such as Knox?

I need to be able to access my banking apps etc., which don't work if the security has been detected as breached (such as rooting).

I live in the UK and the phone is factory-unlocked.
 

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