Root Tried em all

[frustratedS4mini]

So I have tried just about every method google searching could show me. It seems I clear one hurdle and come to the next. Im trying to root the following phone:

Galaxy S4 mini from AT&T store

Model
Samsung-SGH-I257

Android Version
4.2.2

Baseband Version
I257UCU2AND8

Kernel Version
3.4.0-2653540
se.infra@R0301-01 #1
Wed Apr 23 12:07:02 KST 2014

Build Number
JDQ39.I257UCU2AND8
'
SE for Android Status
Enforcing
SEPF_SAMSUNG-SGH-I257_4.2.2_0025

Secure Boot status
type: Samsung


Ive tried odin and several other programs with no luck.. Odin says failed cuz of AUTH.

From what I can gather my bootloader is knox and locked and hence stopping me from doing anything fun. I cant seem to find anyway around it. Is there a guide for this exact phone? Or anyone personally done it yet? Thanks!

 

[Mr. Lucky]

4.2.2 is easily rootable. Have you tried towelroot or Saferoot?

 

[paradigmcrime]

yes.. niether of those work. My device isnt supported. Its not so much the android version, its this particular device, and the fact its locked down hard. I have tried several guides and such. Anyways, really appreciate any help from someone who has rooted this particular model. Even entering into download mode with odin fails. Ive tried all the "Easy root" options, they give up right away.

 

[Hadron]

Your best bet may be to ask here: Galaxy S4 Mini - All Things Root - Android Forums. That's where you'll find other people with experience of rooting the S4 Mini.

 

[mdawdy]

It is somewhat well known that there is no rooting method for the SGH-i257M.

 

[Mr. Lucky]

This person has an SGH-i257M and successfully rooted:
Root new S4 mini model SGH-I257M - Post #20 - XDA Forums

The link referenced in the above thread is specifically for 4.2.2.

 

[DavidNY]

So, is it still impossible to root the i257?