[Q] Where to download the oldest firmware for this phone
I am trying to downgrade an AT&T S4 so that i can factory unlock it.
I downloaded Samsung-Updates.com-SGH-I337-ATT-I337UCUAMDL-1367050591 from a couple different mirrors and they're all corrupt
so I don't even know if this version works.
edit: I guess ..What's the latest
firmware the *#0011# trick will work on?
Or is this even possible? It has UCUAMF3 installed
(And I have read up on MF3 and still don't understand if this is possible.)
Thanks in advance for any help! I have already been googling for a couple days.