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Help Downgrading and rooting Galaxy S5 Active? (SM-G870A)

Drewbarnes43

Lurker
Feb 7, 2017
3
2
Hello! I I'm new to rooting and don't exactly know much more than just the basics. I know that I have to use Odin to downgrade the software first but I can't seem to make it work. Also, I dont really know what to do after that. I have a Samsung Galaxy S5 Active SM-G870A version 5.1.1
I'm using Odin 3.10.7 trying to Downgrade to 4.4.2 but am getting a message that says

Complete(Write) operation failed
All threads completed. (succeed 0 / failed 1)

Does anybody know what is causing this and how to fix it? Thank you in advance!
 
I still have one that I'm holding on to that was on 4.4.2 when I got it and I was able to root and update to 5.0 and keep root.
Locked bootloaders on AT&T Samsung devices and the fact that AT&T doesn't release their firmware makes things difficult and developers lose interest. Main reason I'll never buy a carrier branded phone again.
 
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