Database Users

I can't get any other custom ROMs to work on my S4

Hello, I am new to this so forgive any misused jargon. I got an AT&T Galaxy S4 right around Thanksgiving and like a fool I couldn't wait to root it and install ROMs - so I did.
This is the current version of my phone after rooting it. I am on stock-rooted right now.
Model #:SGH-I337
Android Version: 4.2.2 (It was 4.3 straight out of the box, BUT it was NOT the OTA update).
Baseband Version: I337UCUAMF3
Kernel Version: 3.4.0-812098 [email protected] #1
I used this method to root it: (Since I can't post links yet, search"root galaxy s4 at&t mj7" and it should be the first video, uploaded by Tomsgt123)
Shortly after, I installed ROM Manager for CWM and I have CWM 6.0.4.4 but I never used it.
Then I installed Titanium Backup even though I also never used it.
I discovered SafeStrap and installed version 3.65 (TWRP v2.6.3.1) and I was able to successfully create a ROM slot for Hyperdrive, which
installed smoothly for me. However, when I wanted to try out other ROMs (Cyanogenmod, PAC-ROM, OmniROM) they wouldn't work.
After flashing them, my phone would turn off (or the screen stays black) and I would have to hold the power button to reboot it so I can revert to the stock ROM in Safestrap.
I really want to try another custom ROM, because I'm jealous of all the cool themes people have. Am I doing something wrong? Or did I ruin something during the rooting process? Any feedback is appreciated.

alexdoo122 said:
Hello, I am new to this so forgive any misused jargon. I got an AT&T Galaxy S4 right around Thanksgiving and like a fool I couldn't wait to root it and install ROMs - so I did.
This is the current version of my phone after rooting it. I am on stock-rooted right now.
Model #:SGH-I337
Android Version: 4.2.2 (It was 4.3 straight out of the box, BUT it was NOT the OTA update).
Baseband Version: I337UCUAMF3
Kernel Version: 3.4.0-812098 [email protected] #1
I used this method to root it: (Since I can't post links yet, search"root galaxy s4 at&t mj7" and it should be the first video, uploaded by Tomsgt123)
Shortly after, I installed ROM Manager for CWM and I have CWM 6.0.4.4 but I never used it.
Then I installed Titanium Backup even though I also never used it.
I discovered SafeStrap and installed version 3.65 (TWRP v2.6.3.1) and I was able to successfully create a ROM slot for Hyperdrive, which
installed smoothly for me. However, when I wanted to try out other ROMs (Cyanogenmod, PAC-ROM, OmniROM) they wouldn't work.
After flashing them, my phone would turn off (or the screen stays black) and I would have to hold the power button to reboot it so I can revert to the stock ROM in Safestrap.
I really want to try another custom ROM, because I'm jealous of all the cool themes people have. Am I doing something wrong? Or did I ruin something during the rooting process? Any feedback is appreciated.
Click to expand...
Click to collapse
First off MF3 is not 4.3 right out of the box. MF3 is exactly as you wrote it, 4.2.2 android firmware. As you have found ONLY safestrap will work on MF3. To flash Roms you can ONLY FLASH 4.2 based Roms. Check out this link to see WHICH ROMS you CAN flash http://forum.xda-developers.com/showthread.php?t=2428254 with safestrap.
You won't be able to flash CM or other asop Roms from my understanding. You can flash the Google Edition ROM 4.2.2. Again check out that link on the first post it shows Roms that can be flashed.
FROM THE POST I LINKED:
Confirmed working ROMs
Google Play Edition 4.2.2
http://forum.xda-developers.com/showthread.php?t=2356276
http://forum.xda-developers.com/showthread.php?t=2341376
Deadly Venom
SHOStock
Darth Stalker
Graviton (Installs fine for some, will not install for others)
Goldeneye (May have issues)
Wicked ROM (T-Mobile) Input correct APN and change network mode to Auto LTE/GSM Will most likely lose root.
All Infamous TW Roms should work
Input correct APN settings for non AT&T ROMs (ie i9505 ROMs) to get LTE
Omega ROM i9505
Echo ROM i9505
Vision X i9505
BoBCaTROM i9505 (May not need to change APN)
Hyperdrive ROM. (May not be able to send SMS while on LTE)
BE SURE TO CHECK OUT THE LINK THOUGH TO KNOW HOW TO FLASH CORRECTLY ANY OF TJESE ROMS
Sent From My Spiderman,Ironman,Red,Dark Blue,Green, GreyedOut BadAss Themed I337

Thanks for the tip! I'm just relieved that I wasn't doing anything overly-horrific to my phone!

[Q&A] [RECOVERY LOCKED] Safestrap Recovery v3.71/v3.72 [2014-04-02 KK Beta]

Q&A for [RECOVERY LOCKED] Safestrap Recovery v3.71/v3.72 [2014-04-02 KK Beta]
Some developers prefer that questions remain separate from their main development thread to help keep things organized. Placing your question within this thread will increase its chances of being answered by a member of the community or by the developer. Thanks for understanding and for helping to keep XDA neat and tidy! :smile:

HELP!!!
I'm disabled & have a hard time typing. Please bear with me.
I have a Galaxy S4 Smart(DUMB) AT&T connected piece of crap cell phone that I hate.
I've installed towel root & when I try to make it rain I get a window saying that it is not supported on this phone. I've also got a message from a root checker saying that the GD phone is "not properly rooted"!!!
I have NO PATIENCE with Computer Syntax & I don't own or want a computer.
I'm barely able to follow 1/10th of the postings that I've read!
Look, I just want to jailbreak & FREE-UP this F%#King phone so I can get rid of the constant pop-ups & 300+ apps that R running in the background!
CAN SOMEBODY PLEASE HELP ME!!!

What are the use for the rom slot? Can I flash aosp roms in it? Thanks.

Removing SELinux
Once I've installed SS 3.75, is it safe to remove SELinux Mode changer?

kujo1b09 said:
Once I've installed SS 3.75, is it safe to remove SELinux Mode changer?
Click to expand...
Click to collapse
The ss app may force close if you remove it. But you no longer need mode changer at all if using the latest ss v3.75-A01.

Thanks!

Which Safestrap for Bell/Virgin Galaxy S4 NE1 4.4.2
I have a Galaxy S4 SCH-I337M with stock 4.4.2 LUFNE1
I rooted with towel root and installed super user.
I want to install safestrap (I assume my bootloader is locked bc is says write protected when in download mode)
I dont see any versions for NE1 just NB1,MK2,MF3, not sure where to proceed from here.

safestrap i337 nj4
Does safestrap work on i337 on nj4? If so, which version? I have never rooted and am on latest 4.4.4 nj4.

Safestrap on NE2(Telcel Mexico)
I didnt notice the automatic updates on my new S4 and it upgraded over the night while i was sleeping, so now im stuck with 4.4.2 (KOT49H.I337MUMUFNE2) ... I was wondering if there is support for safestrap with this rom, or is there a way to downgrade without loosing 4G and WiFi.
Thanks.
Edit:
Greetings, i have installed safestrap 3.72 and succesfully made a rom slot in my phone, saddly, when i try to install a ZIP file with a custom ROM, it says it succescully installed the ROM and then when i try to restart, it boots with a clone of the main stock ROM ... Any idea why this is happening?. Also i must point out that im trying to install Cyanogen Mod 11, the lastest nightly for the jflte ... Im wondering if i should try with the version for the jflteatt.

any updates for this thread on using 4.4.4 NJ4?
Hey first great work this is my first post so i apologize if this has been answered or if this thread is no longer valid. My question is does SafeStrap work for NJ4 4.4.4?

Yes...I'm on ss 375 with 444

Lollipop support?
I know that it might be a huge effort, but what is required to support lollipop?
Looks like users with TWRP can flash some kernels as long as they are based in the stock kernel and still in locked bootloader.
Looking at this thread: http://forum.xda-developers.com/showthread.php?t=2292341, ktoonsez was able to to provide kernel for AOSP lollipop using CWM or TWRP. Can this also be done for Safestrap?
This might also require ROM modifications to support safestrap, but again, what is required.
I have some basic-medium programming skills and relatively new to Android but willing to collaborate for whatever is required, just point me to the info I need to learn and I'll do my best to help.

memo_droid said:
I know that it might be a huge effort, but what is required to support lollipop?
Looks like users with TWRP can flash some kernels as long as they are based in the stock kernel and still in locked bootloader.
Looking at this thread: http://forum.xda-developers.com/showthread.php?t=2292341, ktoonsez was able to to provide kernel for AOSP lollipop using CWM or TWRP. Can this also be done for Safestrap?
This might also require ROM modifications to support safestrap, but again, what is required.
I have some basic-medium programming skills and relatively new to Android but willing to collaborate for whatever is required, just point me to the info I need to learn and I'll do my best to help.
Click to expand...
Click to collapse
If you have true TWRP, that means you have an exploitable bootloader, even if it's still locked. The only way you could get lollipop on a stock kernel for Safestrap users is if we get an official Lollipop stock kernel. If you've got evidence to say otherwise, sharing would be good. Otherwise, Safestrap doesn't allow the flashing of kernels since they won't work, and the only other possibility is using a kexec module to load an alternate kernel from disk after the phone starts up. This module is actually being worked on, and if you want to ask about it go to the verizon S4 General section and look for the "if we are serious" thread.

Bootloop when using ROM slots?
I've attempted to use the recovery several times now. If I use the Stock ROM slot to flash the ROM (Goldeneye v49.2) I can't get back into SS recovery once it flashes. If I use the ROM slots, I get stuck in a very laggy bootloop. PLEASE HELP?
I'm using Galaxy s4 SGH-I337 on 4.4.2
Baseband version UCUFNB1

NK1 wi-fi modules.zip (Safestrapped Hyperdrive MOD installed) which one?
Hi, I've got an sch-i545 verizon gs4 with Hyperdrive Rom running on it (yay!) but need the Modules.zip file for NK1, which seems to be the least used version of Verizon's locked bootloader phones.
If you or someone could point me towards a modules.zip for NK1?
THANK YOU FOR ALL YOUR WORK!!!
J

Timelourd said:
Hi, I've got an sch-i545 verizon gs4 with Hyperdrive Rom running on it (yay!) but need the Modules.zip file for NK1, which seems to be the least used version of Verizon's locked bootloader phones.
If you or someone could point me towards a modules.zip for NK1?
THANK YOU FOR ALL YOUR WORK!!!
J
Click to expand...
Click to collapse
Best place to start would be the Verizon S4 forums and not the AT&T S4 section. Look for any index type threads or something there.

Guys. I need some help. I just installed Safestrap 3.75 on my S4 but when I boot into recovery the time is all wrong its off by like an hour and 20 min. Time zone is correctly set. Anyone have any ideas?

safestrap splash screen is too big
I download safestrap successfully and when I reboot the system safestrap splash screen pops up. But I don't see the menu key on the splash screen. Also I noticed that splash screen is too big and to my phone and I'm stuck on the splash screen. I can't do any thing. If I go into recovery it will goes into moto boot screen and stay there forever.
Please help me.
My phone is rooted Razr HD
Thanks.

[Q] Some fairly Noob Clarifications (TWRP/CWM/MDL Related)

Purchased my S4 at launch, only rooted it and never really got around to tweaking it much. It has slowed down a bit so now is the time.
I'm on MDL, stock 4.2.2, and rooted with TWRP 2.5.0.2 On to the questions/clarifications, hopefully these aren't egregious. I know the info is out there but for actually finding specific information, the xda forums are a bit overwhelming and sometimes conflicting...
1) Recovery - Latest/preferred recovery for the s4 (on MDL) with auto-loki baked in? Are any of the latest versions of TWRP/CWM dangerous/incompatible or can I just install the latest/greatest with ROM Installers and go from there?
2) Modem - Flashing an updated modem, regardless of ROM/OS # should not break anything and/or lock down the bootloader any more so than it already is at MDL, correct? Updating the baseband will have no effect on the build # and thus loki is still and option (versus safestrap)? Preferred modem at this time? (ATT, SF Bay Area)
3) ROMS - Any ROM, followed by loki patch or flashed via an auto-loki capable recovery should be fine, correct? Is a ROM specifically built for safestrap applications and thus would not work with MDL, or are ROMs noted as being safestrap ready just able to be used via safestrap, but loki as well?
4) Hard to keep track of all the ROMs and the builds and branches etc - Can anyone point me in the right direction of either a) the latest stock touch-wiz 4.4.4 ROM that can be flashed over MDL without essentially updating past MDL? b) the best/most recent pure google (Play Store S4 Edition) ROM, same story with not breaking MDL?
Again, I apologize I am sure the info is all buried in here somewhere, it just gets to a point where pointed questions rather than multiple 500+ post threads are hopefully less likely to brick my phone. Ideally I just want to get on the latest software (and enable screen casting, for one). Assuming it comes quick enough, once I get this process down I will probably make the jump to 5.0 when it is ready, anticipate a couple months? Who knows.
Thanks, much appreciated.

Norcalz71 said:
Purchased my S4 at launch, only rooted it and never really got around to tweaking it much. It has slowed down a bit so now is the time.
I'm on MDL, stock 4.2.2, and rooted with TWRP 2.5.0.2 On to the questions/clarifications, hopefully these aren't egregious. I know the info is out there but for actually finding specific information, the xda forums are a bit overwhelming and sometimes conflicting...
1) Recovery - Latest/preferred recovery for the s4 (on MDL) with auto-loki baked in? Are any of the latest versions of TWRP/CWM dangerous/incompatible or can I just install the latest/greatest with ROM Installers and go from there?
2) Modem - Flashing an updated modem, regardless of ROM/OS # should not break anything and/or lock down the bootloader any more so than it already is at MDL, correct? Updating the baseband will have no effect on the build # and thus loki is still and option (versus safestrap)? Preferred modem at this time? (ATT, SF Bay Area)
3) ROMS - Any ROM, followed by loki patch or flashed via an auto-loki capable recovery should be fine, correct? Is a ROM specifically built for safestrap applications and thus would not work with MDL, or are ROMs noted as being safestrap ready just able to be used via safestrap, but loki as well?
4) Hard to keep track of all the ROMs and the builds and branches etc - Can anyone point me in the right direction of either a) the latest stock touch-wiz 4.4.4 ROM that can be flashed over MDL without essentially updating past MDL? b) the best/most recent pure google (Play Store S4 Edition) ROM, same story with not breaking MDL?
Again, I apologize I am sure the info is all buried in here somewhere, it just gets to a point where pointed questions rather than multiple 500+ post threads are hopefully less likely to brick my phone. Ideally I just want to get on the latest software (and enable screen casting, for one). Assuming it comes quick enough, once I get this process down I will probably make the jump to 5.0 when it is ready, anticipate a couple months? Who knows.
Thanks, much appreciated.
Click to expand...
Click to collapse
I will try to help with a few of these questions, but others I am not familiar with very much. On that note DO NOT update your bootloader!!! It will be locked down further and Loki will NOT WORK. And you could NOT flash any kernels with safestrap. So with safestrap ONLY the stock kernel can be used. Now on to your questions...
1) I am using TWRP 8.1 if I remember correctly. You can find it in the Original Android Development section. It does NOT Auto Loki, so keep the loki-doki flashable zip on your sdcard OR use Roms that already have/use the boot.Loki kernels like ShoStock-i 8.1
2) Modem flashing will NOT lock anything up further as far as the bootloader. You can flash ANY or ALL of them from my modem thread. See which works BEST FOR YOU in YOUR AREA. I am in So Cal and the best for me has been either MDL. But I have and do test ALL of them. You can always flash back to whichever one works best for you.
3.) Like I said I use ShoStock-i 8.1 because it has and does EVERYTHING I need my phone to do and does it without any issues. I have NOT tried to use a Safestrap modified ROM so I have very little experience with that. Normally most devs will have two separate versions, one for safestrap compatible and one for us without safestrap. ShoStock-i is already built with Loki in the kernel so you do not NEED to flash Loki-Doki patch.
4) there are NO Touchwiz 4.4.4 Stock Roms for ATT yet. But I did try out one of the Touchwiz 4.4.4 T-Mobile based Roms and it worked perfectly. You can either get it from the ATT forums and I believe it is already lokified, or get it from the T-Mobile forum and make sure to flash Loki-Doki patch before booting up phone after flashing the ROM. Again the will NOT update your bootloader past your MDL bootloader, so you are good as you are with no worries. By the way on ShoStock-i 8.1 the screen casting to Chromecast works PERFECTLY without having to flash any other .apk's or mess with ANYTHING

This is the exact same boat I'm in. Trying to track down the answers as well. Will keep an eye here as well to watch for answers.

awesome reply thanks RockRatt, that just about covers it. I will maybe give the ShoStock ROM a go and see how I like it. As long as all the normal features are working fine, I should be good.
One last thing I forgot - Odin. I have the stock odin firmware files from when my phone was new (The MDL package). As long as I dont update the bootloader, I should be able to Odin back to the brand new in box state should something go awry or not dig the other ROMs, correct?
Thanks again,

Norcalz71 said:
awesome reply thanks RockRatt, that just about covers it. I will maybe give the ShoStock ROM a go and see how I like it. As long as all the normal features are working fine, I should be good.
One last thing I forgot - Odin. I have the stock odin firmware files from when my phone was new (The MDL package). As long as I dont update the bootloader, I should be able to Odin back to the brand new in box state should something go awry or not dig the other ROMs, correct?
Thanks again,
Click to expand...
Click to collapse
Yep. Just don't update the bootloader...So no flashing newer firmware that contains the bootloader files. Most if not all custom Roms do not have the bootloader files in them. So no problem flashing back to MDL stock if the need never arises. I still in fact have the original MDB bootloader installed that came with the phone before the MDL firmware update.

[Q&A] ★ [ROM/ROOT][N900VVRUCNC4][4.4.2] Stock Root DeOdex [06/18/14] NC2/NC4/D

[Q&A] ★ [ROM/ROOT][N900VVRUCNC4][4.4.2] Stock Root DeOdex [06/18/14] NC2/NC4/D
Q&A for ★ [ROM/ROOT][N900VVRUCNC4][4.4.2] Stock Root DeOdex [06/18/14] NC2/NC4/DevEd COMPATIBLE ★ Insecure Modules/Selinux Permissive ON NC4 Bootloader!! ★
Some developers prefer that questions remain separate from their main development thread to help keep things organized. Placing your question within this thread will increase its chances of being answered by a member of the community or by the developer.
Before posting, please use the forum search and read through the discussion thread for ★ [ROM/ROOT][N900VVRUCNC4][4.4.2] Stock Root DeOdex [06/18/14] NC2/NC4/DevEd COMPATIBLE ★ Insecure Modules/Selinux Permissive ON NC4 Bootloader!! ★. If you can't find an answer, post it here, being sure to give as much information as possible (firmware version, steps to reproduce, logcat if available) so that you can get help.
Thanks for understanding and for helping to keep XDA neat and tidy!

will this file unroot my phone?
I want to know if these files will put my phone back to factory firmware? I accidentally unrooted, not realizing what I was doing really. This looks like the same file name (nc2kernel.tar.md5.zip ) as I have seen on other sites, but I cannot get those to download correctly. My Note 3 is with Verizon and it is running kernal. I just want my phone to be UNROOTED like I just got it out of the box. I am concerned about warranty. I am back up all and I have also dowloaded ODIN and it's ready to run.
Thanks to:
ChainFire - for superSU
Hashcode - For Safestrap For Retail Note 3's
SexTape - For the Leaked NC2 Goodness!!
Surge1223 - for starting the deodex base
BajaSur - for getting me back going on n3!!
hsbadr - For Being Brave with the nc4 firmware and giving u guys some NC4 Love First!!
XDA:DevDB Information
★ [ROM/ROOT][N900VVRUCNC4][4.4.2] Stock Root DeOdex [06/18/14] NC2/NC4/DevEd COMPATIBLE ★ Insecure Modules/Selinux Permissive ON NC4 Bootloader!! ★, ROM for the Verizon Samsung Galaxy Note 3
Contributors
BeansTown106
Version Information
Status: Stable
Stable Release Date: 2014-06-19
Created 2014-06-19
Last Updated 2014-06-19[/QUOTE]

help getting from nc4 deodex to jellybeans b6
I followed this thread with success after many many attempts to get rooted and hacked. ive had nothing but problems with NC4 getting to this point.
http://forum.xda-developers.com/showthread.php?t=2787627
basically ive wanted to be hacked running jellybeans ROM's since I got the phone. ive been running his ROMs on my galaxy phones for years now. so I finally was able to follow the step by step to get a stock deodexed ROM. I created on ROM SLOT 1 I wiped and installed jellybeans B6 but it just black screens. what do I need to do now to get B6 running? do I need to install the B6 ROM then again install the NC2 kernel before booting? not sure what to do next
thanks in advanced,
al

kind of a noob to rooting higher end phones
ive been rooting the cheap cricket phones ans recently ive gotten the verizon galaxay note 3 on the nc4 build. im wanting to install hyperdrive rom but im getting lost watching video after video and reading page after page. i see some people say i need permissive and some dont say anything at all. could you point me in the right direction please and thank you very much

knox0x1 said:
ive been rooting the cheap cricket phones ans recently ive gotten the verizon galaxay note 3 on the nc4 build. im wanting to install hyperdrive rom but im getting lost watching video after video and reading page after page. i see some people say i need permissive and some dont say anything at all. could you point me in the right direction please and thank you very much
Click to expand...
Click to collapse
im on nc4 also. I used the towel root program to get rooted, and then installed the safestrap but I forgot which one. it wasn't the latest version I don't think but it was one of the last ones. and I had to install it a couple times to get it installed correctly. then I followed the link I posted above your post. the only downfall, now im stuck, I cant flash an other rom to the phone successfully. they all fail to boot and I have to revert back to the linked rom. id like to get on jellybeans rom, ran them on my galaxy nexus and my note 2 and he makes a great rom! good luck!

Flash Kernel in safestrap without odin
Im currently on OTA NC4 and I want to install this rom in my stock rom slot in Safestrap. (I would like to do this so I can install custom roms).
My question is, can I flash the NC2/NC4 kernel required without going into download mode and using odin?
Thanks in advance!

Been running this rom for over 8 months. Very solid. I do have two issues though bluetooth seems to skip while playing music occasionally (fresh restart fixes). I hate magazine from the center button. What options do I have to change that.

kennypasatrain said:
Im currently on OTA NC4 and I want to install this rom in my stock rom slot in Safestrap. (I would like to do this so I can install custom roms).
My question is, can I flash the NC2/NC4 kernel required without going into download mode and using odin?
Thanks in advance!
Click to expand...
Click to collapse
You need to use Odin. Rather simple, just follow the instructions re Odin use. Unfortunately, the instructions for this rom found atnthe beginning of the thread neglects to mention the need for Odin to flash the kernal.
Tidal HiFi
(1411 kbps flac) and
Spotify Premium
(320 kbps Ogg Vorbis); Android App; WiFi; SNGN3; USB TGO; Fiio E18 (96/24) dac/dap; Dunnu 1000 IEMs;1st World resident (Sympathies to those of lesser capabilities)

VZW note 3 4.4.4 to 4.4.2 root
hey guys,
I just bought a Note 3 (n900v) and it has 4.4.4 and I want to root it (all of my other phones and my wife's are all rooted) but it looks like there isnt a root for 4.4.4. So I thought about downgrading to 4.4.2 and then rooting but I having trouble finding the stock rom (links are all dead) then I ran across this. Can I use this to downgrade/root my phone?
I was also wondering if it might just be easier to go to a custom rom? I have never ran a custom rom but from my understanding most of them are pre-rooted and have a lot less junk installed on them. can anyone recommend a good custom rom? (with install instructions >_<)
Thanks guys.
-Drog

Cannot save or install ROMs - Rooted, SafeStrap installed, Knox OK
Howdy, folks!
My Verizon Note 3 details: SM-N900V / Android 4.4.2 / Kernel 3.4.0-1487472 / build version NC4 / bootloader NC4 / Knox = 0x0 / Build date 4/28/14.
Device is rooted (via TowelRoot and confirmed with Titanium Backup). Safestrap 3.75 is "Installed". BusyBox 1.232 is installed.
As I understand it, in order to save or install ROMs I *must* use SafeStrap.
When I run SafeStrap the screen shows "State: Installed" and "Safe System: Not Active".
Tapping "Reboot to Recovery" does reboot the phone but I do NOT get any options to save or install any ROMs. The phone just reboots.
I thought I read somewhere I may need to (somehow) roll back to NC2...
Any ideas, folks?
Thanks!

MMS Stagefright vulnerability
Are there any expected updates/patches to address this vulnerability?

Odin3.10 failing to flash BL and Modems

Hello. I am attempting to flash new BL and Modems using Odin 3.10.6 on a Windows 7 partition on a Macbook Pro mid-2012 OS 10.10. My phone is a T-Mobile Samsung Galaxy S4, Baseband number M919UVUAMDL. My current build number on my phone is Omega v7.0 - XXUBMF8. I'm trying to upgrade to Omega v42 - XXUHOF2.
My problem:
Odin recognizes my phone fine but fails the flash very quickly. The fail message Odin gives is "FAIL! (auth)" right after "NAND Write Start!!" and my phone displays the message "Secure Check Fail: aboot". This happens no matter what USB cable I use.
The files I'm trying to flash are:
BL_I9505XXUHOF2_user_low_ship_MULTI_CERT.tar
GSM_Modem_I9505XXUHOF2_and_LTE_Modem_I9505XXUHOF2.tar
Any help?

You can't flash an I9505 bootloader or modem on a T-Mobile S4. You can only use a T-Mobile bootloader and modem. So search the T-Mobile S4 forums for the most current bootloader and modem, and flash them through Odin.

Thank you for the help. I am now quite confused and need more help, if it can be spared.
I understand now that I can only use SGH-M919 bootloaders and modems but I can use Omega ROMs, too. I tried my best to find current, and any, bootloaders and modems on the SGH-M919 forum without success. I'm not an idiot but I'm also not experienced with navigating this forum. Can anyone offer more specific direction to SGH-M919 bootloaders and modems?
Some other questions I now have:
- Do I need Lollipop BL/modem in order to flash a Lollipop-based custom ROM or can I use any generation BL/modem?
- Will all Lollipop-based custom ROMs require me to flash new BL/modems? Can I just find a ROM that doesn't require new ones?
If it seems like I'm confused or ignorant of more issues than I've addressed, it probably because I am. Any and all help and education is greatly appreciated. Thanks.

There is a link to the T-Mobile S4 forums in my previous post. Make a thread in their Q&A section and ask where the bootloaders and modems are. If I recall however, the T-Mobile S4 never went past 4.4.4, though I hope I'm wrong. Regardless, while these ROMs all recommend the latest Android 5.x bootloaders and modems, they should still work with whatever you do have available. Performance may however be affected.