How can I undo my s6 edge update?

[AC Question]

Ever since my last updated my s6 edge on April 2017. My phone has gone weird. Mant of my apps gone white. Battery life draining way to fast. Lost all my auto corrections and history on typing and it replaced with the wrong words other than what I typed. Etc.
I hate my phone now. Is there anybody know how to undo my last update and lock it in that version of the os system?

 

[anon(238680)]

Welcome to the forum. See this:

Reflash ROM or downgrade upgrade:
https://forums.androidcentral.com/a...w-flash-stock-rom-via-odin-new-interface.html

If you need additional help or have more questions or details to share, please join the site so you can reply in this thread. See this link for instructions on how to join Android Central.
https://forums.androidcentral.com/ask-question/409154-join-android-central-community.html

 

[hallux]

Since the re-flash of an old ROM essentially results in a blank device, I suggest trying a factory reset prior to taking the risk of a re-flash. You will need to back up your data (whatever CAN be backed up anyway) before either process.