[Help] G900A unable to flash with ODIN trying to bring phone to stock - was towelroot

Hi,

I am trying to unroot my wife's Samsung Galaxy S5 SM-G900A. I went ahead and did unroot via SU, then reboot. I've done a reset/wipe via recovery mode which was successful this was all after attempting to flash to stock ROM and it kept failing. I was hoping unrooting and wiping data and cache would help but none has I keep running into the same problem in ODIN see below:

<ID:0/003> Added!!
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> G900AUCU1ANCE_G900AATT1ANCE_G900AUCU1ANCE_HOME.tar .md5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/003> Odin v.3 engine (ID:3)..
<ID:0/003> File analysis..
<ID:0/003> SetupConnection..
<ID:0/003> Initialzation..
<ID:0/003> Get PIT for mapping..
<ID:0/003> Firmware update start..
<ID:0/003> aboot.mbn
<ID:0/003> NAND Write Start!!
<ID:0/003> FAIL! (Auth)
<OSM> All threads completed. (succeed 0 / failed 1)


I have tried multiple Samsung branded USB cords in multiple USB ports (even on multiple computers) all with the same issue. I went ahead and downloaded the G900A PIT file and tried to install that with ODIN but that failed as well. I have debug mode enabled it didn't change anything. I have also used multiple versions of ODIN both v3-1.85 and v3-3.07 both produce same error.

the rom I'm trying to flash to is: G900AUCU1ANCE_G900AATT1ANCE_G900AUCU1ANCE_HOME.tar .md5 the PIT I ended up trying was SM-G900A_pit.pit.

This phone was originally rooted with towelroot I think at one point I put a ROM on the phone after an update came out that took root away. That rom allowed me to re-root with towelroot and I ended up freezing a ton of the apps and the autoupdate so it wouldn't ever happen again.



Model Number: SAMSUNG-SM-G900A
Android Version 4.4.2
Baseband version: G900AUCU2AND3
Kernel version: 3.4.0-2178781 dpi@SWDD5701 #1 TUE JUL 22 13:58:46 KST 2014
Build Number: KOT49H.G900AUCU2AND3


If anyone could provide any help in getting this phone back to stock I would really appreciate it

samsung s5 G900A 4.4.2 (kitkat) root help

Ok so i have looked for almost 2 whole days for answers before finally making an account here (and stop being a lurker for some time). I have a samsung galaxy s5 with 4.4.2 (kitkat) OS, model G900A (that means from ATT) and the kernel was made in jul 22, 13:58, 2014. which means i cant use towelroot for whatever reason. my sim card is metroPCS though and i have no warranty so all i care about is not bricking my phone without a way to get it back, cus i dont have another 400 to drop on a phone. i have rooted a phone before so i know alittle about this stuff but im not an expert. through reading it seems i have to flash my kernel with an old version and root it, then bring it back to normal. the closest i ever got to actually doing this was with the help of this site " w0lfdroid(dot)com/2014/09/TowelRoot-Samsung-Galaxy-S4-S5-and-Note3-Android-4.4.2-NF-or-Later.html ". problem is the file that is for the ROOT link for the G900A does not work so i need either a new link or a new way to root. i figured this would be the fastest way to get that.

even though i do have a bit of knowledge i see that others dont so if someone dose decide to help me i would like a good step by step process explaining things that a normal person just walking into this wouldnt get. because not everyone looks up their stuff and thats not their fault its alot of research just to take of bloat ware potentially.

thank you in advace

G900A Stock Lollipop firmware

Anyone has the Stock firmware?
Sammobile doesn't have it, and i could not find it here either
Yeh, i know how to search...

Can I use Safestrap and Xposed on my (AT&T G900A) Galaxy S5?

I originally had KitKat 4.4.2 rooted using towelroot, but I got tired of the ugly TouchWiz UI and wanted to try Lollipop. I successfully used the FlashFire method and flashed a pre-rooted Lollipop OF3 Stock ROM (DeOdexed) and I am using the OA1 Bootloader (I believe it's KitKat) which I flashed with Odin.

I would like to use Safestrap to flash the .zip required to use Xposed on Lollipop. I read that to get safestrap somewhat functioning, you have to flash a stock kernal to get it to boot into safestrap, flash your .zip, then flash another kernal to ensure that the phone actually boots after using safestrap.

I can't find a straightforward answer as to what kernals I should be using to do this for my specific phone and if it is even possible. I will list my phone's details below.

Thank you!

-AT&T Samsung Galaxy S5 G900A
-Lollipop 5.0 (Pre-rooted OF3 Stock ROM)
-G900A OA1 Bootloader (KitKat bootloader?)

Can I use Safestrap and Xposed on my (AT&T G900A) Galaxy S5?

I originally had KitKat 4.4.2 rooted using towelroot, but I got tired of the ugly TouchWiz UI and wanted to try Lollipop. I successfully used the FlashFire method and flashed a pre-rooted Lollipop OF3 Stock ROM (DeOdexed) and I am using the OA1 Bootloader (I believe it's KitKat) which I flashed with Odin.

I would like to use Safestrap to flash the .zip required to use Xposed on Lollipop. I read that to get safestrap somewhat functioning, you have to flash a stock kernal to get it to boot into safestrap, flash your .zip, then flash another kernal to ensure that the phone actually boots after using safestrap.

I can't find a straightforward answer as to what kernals I should be using to do this for my specific phone and if it is even possible. I will list my phone's details below.

Thank you!

-AT&T Samsung Galaxy S5 G900A
-Lollipop 5.0 (Pre-rooted OF3 Stock ROM)
-G900A OA1 Bootloader (KitKat bootloader?)

Does G900a or G870a work in USB Diag Mode for QPST?

Does the G900a and/or G870a work in diagnostic mode for QPST, or does the locked bootloader prevent this?

I'm trying to test turning on the Tmobile LTE and the extra GSM channels on a G870a but device is not recognized by the computer as soon as I switch to rndis + dm + modem + adb.

Official Samsung USB drivers, debugging enabled, standard reinstallation tricks and such already tried. What am I overlooking? Used the right cable too...

Or is this just a non-starter from the bootloader?

Thanks!