Database Users

[Q] Odin Keeps Failing

Hello. I have been searching for hours like a mad man on Google for a solution to my problem, but i'm having no luck. Excuse the nooby nature of this post please. So I rooted my Galaxy S4 and I am trying to get it back to stock by flashing the AT&T md5 onto my phone (Galaxy S4 SGH-I337) through ODIN and it fails every single time. Initially, with ODIN 3.07, it would return something like fail (auth). Then I tried with ODIN 1.85, but that version returns "Complete(Write) operation failed." In addition, I attempted Kies but it too failed (no specific error code), and now the phone wont boot. It says that the firmware upgrade encountered an issue. I am not able to access stock recovery or TWRP because it will automatically go to Download Mode with "Could not do normal boot" in the top left corner if I in any way attempt to access it. I am using the stock cable with USB Debugging enabled. I also tried two different computers, two different cables (one being stock of course), and tried every single usb port on both computers. What went wrong? I will give you my upmost respect if you can solve this. I also am absolutely willing to supply any information you may need. Just ask. (Please don't be bricked. Please don't be bricked)
-With kind regards, Branden.

Let me guess you had the att mf3 firmware and tried retoring by flashing the MDL firmware via odin? You said md5 so I assume mdl? You might at this point still be able to fix it visiting a best buy near you if it has a samsung center. Also att store can reflash mf3.
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2

Click Here throw this thread in the MF3 pile... guys we got another noob here, take a trip to your closest best buy and hope the samsung experience will flash the mf3 update for u

You mention md5, which as febby assumed I'll assume to be mdl, and twrp. Do you have mdl firmware on your phone and did you have twrp installed. Assuming you had twrp you were probably on mdl firmware. If so, I would re-download the firmware and try again. It would help if you could explain where Odin is failing too.

jd1639 said:
You mention md5, which as febby assumed I'll assume to be mdl, and twrp. Do you have mdl firmware on your phone and did you have twrp installed. Assuming you had twrp you were probably on mdl firmware. If so, I would re-download the firmware and try again. It would help if you could explain where Odin is failing too.
Click to expand...
Click to collapse
I never actually got TWRP working. I flashed it through Goo Manger and I was never able access it (It went to download mode with "Could not do normal boot" in the corner). Does this change the type of firmware I was on? In both cases of ODIN, the newer version (3.07) fails immediately after you start the process at around NAND Write start. It returns Fail (auth). In the older version (1.8.5), it reports that the write operation failed. I attached screenshots of both cases.

If you never got twrp to work then I'm almost positive you have mf3 firmware. You're best bet is best buy and have them re-flash the firmware.

Astrophysicist789 said:
I never actually got TWRP working. I flashed it through Goo Manger and I was never able access it (It went to download mode with "Could not do normal boot" in the corner). Does this change the type of firmware I was on? In both cases of ODIN, the newer version (3.07) fails immediately after you start the process at around NAND Write start. It returns Fail (auth). In the older version (1.8.5), it reports that the write operation failed. I attached screenshots of both cases.
Click to expand...
Click to collapse
There is no way to fix your problem currently so like jd1639 said, take it to best buy to the Samsung Experience area and tell them Samsung Kies firmware update fail and it did this to your phone. Thats what I did yesterday, they flashed it and I have my phone working again.

gandes said:
There is no way to fix your problem currently so like jd1639 said, take it to best buy to the Samsung Experience area and tell them Samsung Kies firmware update fail and it did this to your phone. Thats what I did yesterday, they flashed it and I have my phone working again.
Click to expand...
Click to collapse
Okay. I thank everybody for their assistance. You are very helpful people. I will head down to best buy and see what they can do for me.

Astrophysicist789 said:
Okay. I thank everybody for their assistance. You are very helpful people. I will head down to best buy and see what they can do for me.
Click to expand...
Click to collapse
Your welcome

And just so everyone knows...md5 is part of the package name I believe... (.tar.md5) or could be referring to md5 checksum...anyways as was mentioned and you acknowledged, best buy is your best bet
Sent from my SGH-I337 using Tapatalk 4

Hey guys I used oden to flash back to stock amdl and then a att update keep trying ro come threw durring the night I noticed.it downloadwd went into recovery and was on flash update I hit no instead and rebooted now I noticed my baseband changed to amdb . update is back again and I now hit remind me later is this the update witch will lockbootloader
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

ralphie1267 said:
Hey guys I used oden to flash back to stock amdl and then a att update keep trying ro come threw durring the night I noticed.it downloadwd went into recovery and was on flash update I hit no instead and rebooted now I noticed my baseband changed to amdb . update is back again and I now hit remind me later is this the update witch will lockbootloader
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
Yeah it is the dreaded one! Root your device and flash a custom ROM or use titanium backup to freeze the update apps.
Sent from my SGH-I337 using Tapatalk 2

[Q] Help! Error Updating from MJA to MK2 on Sim Unlocked Phone

Hi,
I have looked all over this website and others for the solution to my problem. If there is a thread for this then I am sorry, but I couldnt find it.
I recently moved from the US to Mexico. I took my SPH-L720 to a phone technician to get my SIM unlocked and am now using it on the Iusacell network. Everything was working fine until I tried to install the MK2 update. The OTA update downloaded just fine, but when it is installing it gets about halfway and then displays a dead Android robot with a red triangle and an exclamation mark and the word "Error".
I do not believe that the phone technician rooted my phone. I think he flashed my modem to MDC. My build number is MJA. My software version is MDC.
Can anybody help me? My phone seems quirky after the MJA update, especially battery life. I am hoping MK2 will fix everything. Also, I have a Mac and not a PC.

newyorkcfc said:
Hi,
I have looked all over this website and others for the solution to my problem. If there is a thread for this then I am sorry, but I couldnt find it.
I recently moved from the US to Mexico. I took my SPH-L720 to a phone technician to get my SIM unlocked and am now using it on the Iusacell network. Everything was working fine until I tried to install the MK2 update. The OTA update downloaded just fine, but when it is installing it gets about halfway and then displays a dead Android robot with a red triangle and an exclamation mark and the word "Error".
I do not believe that the phone technician rooted my phone. I think he flashed my modem to MDC. My build number is MJA. My software version is MDC.
Can anybody help me? My phone seems quirky after the MJA update, especially battery life. I am hoping MK2 will fix everything. Also, I have a Mac and not a PC.
Click to expand...
Click to collapse
Sounds like there is a whole lot going on with your phone setup with so many inconsistancies.
If the Modem(baseband) is MDC - which it woul probably have had to be to do the SIM unlock stuff, and your build is MJA but your software version is MDC you've got a lot of stuff to look at.
How did the tech flash your phone? PC Odin? or via a zip/recovery. If it was flashed via a custom recovery (meaning you have one on your phone) then the OTA will fail/error. Same thing with a custom kernel - failure of OTA. Stock boot/kernels are required for OTAs to work.
The latest update is actually MK2 and not MJA by the way.
You can flash a .tar using Heimdal. Sammobile has the full MK2 one here.
BUT you'll probably need to do some fancy stuff with you APNs to get it to work on your current network - time to see tech who helped you again.

leaderbuilder said:
Sounds like there is a whole lot going on with your phone setup with so many inconsistancies.
If the Modem(baseband) is MDC - which it woul probably have had to be to do the SIM unlock stuff, and your build is MJA but your software version is MDC you've got a lot of stuff to look at.
How did the tech flash your phone? PC Odin? or via a zip/recovery. If it was flashed via a custom recovery (meaning you have one on your phone) then the OTA will fail/error. Same thing with a custom kernel - failure of OTA. Stock boot/kernels are required for OTAs to work.
The latest update is actually MK2 and not MJA by the way.
You can flash a .tar file using Heimdal. Sammobile has the full MK2 one here.
BUT you'll probably need to do some fancy stuff with you APNs to get it to work on your current network - time to see tech who helped you again.
Click to expand...
Click to collapse
Thanks for replying so quickly! I am very new to all of this stuff. If I flash the .tar file will that fix everything? Do I need to root my phone to flash the .tar file? Also, will my SIM remain unlocked or will it relock?
As for the APN, I think I already know all of the necessary info to input because when the tech unlocked the SIM he didn't input the APN info.
BY the way I know MK2 is the latest build and that is why I am trying to update from MJA to MK2. I'm sorry if I didn't make that clear in the OP.

Sorry, I also forgot to mention that I don't know if the technician flashed it with Odin or a zip/recovery because I left my phone there for a few hours. Is there a way to check?

newyorkcfc said:
Sorry, I also forgot to mention that I don't know if the technician flashed it with Odin or a zip/recovery because I left my phone there for a few hours. Is there a way to check?
Click to expand...
Click to collapse
See if you have a custom recovery.
Boot to recovery - Power off. Then Power on+Volume Up+Home button and see if something like CWM, TWRP or Philz recovery loads.
If it is just Spring/Samsung recovery then he flashed the modem via Odin and not a custom recovery. Either way just power off to boot again.

leaderbuilder said:
See if you have a custom recovery.
Boot to recovery - Power off. Then Power on+Volume Up+Home button and see if something like CWM, TWRP or Philz recovery loads.
If it is just Spring/Samsung recovery then he flashed the modem via Odin and not a custom recovery. Either way just power off to boot again.
Click to expand...
Click to collapse
It is the stock Samsung recovery. I guess he used Odin.

Help!!! ODIN/Kies Failed Update, Wont Update at all (solved)

i have a sgh-i337 that i was going to downgrade and root via the saferoot method on here. i first downgraded the modem so i would have access to the hidden menu for unlocking purpose, after that the phone wouldnt accept any other flashing. i tried the PIT, stock firmware, stock rom all of these will fail in odin. i have tried to do a emergency firmware restore in kies which also fails.
please tell me theres some option im missing somewhere

You can't down grade firmware on the i337. Try flashing the same firmware version as you had before attempting to down grade in Odin
Sent from my Nexus 5

mavicious said:
i have a sgh-i337 that i was going to downgrade and root via the saferoot method on here. i first downgraded the modem so i would have access to the hidden menu for unlocking purpose, after that the phone wouldnt accept any other flashing. i tried the PIT, stock firmware, stock rom all of these will fail in odin. i have tried to do a emergency firmware restore in kies which also fails.
please tell me theres some option im missing somewhere
Click to expand...
Click to collapse
Since we don't know what firmware you are on we really can't help too much... thus said, have a look over at these links, and follow their directions to a T
MF3:
http://forum.xda-developers.com/showthread.php?t=2358763
http://forum.xda-developers.com/showthread.php?t=2404970
MK2/NB1:
http://forum.xda-developers.com/showthread.php?t=2680868
http://forum.xda-developers.com/showthread.php?t=2692825
Good luck

i was on NB1, sorry about the lack of info there.
i finally got it sorted out... well almost.
it turns out that flashing the modem again allowed me to get the phone back into working condition, after which i was able to downgrade to MK2
this worked fine and dandy with one issue remaining, i have no sound what so ever. no notification, music, video, nothing. wont even play music for that matter, says it cant open this type of file "mp3" even pandora wont play.
thanks for the replies.

flashing a stock NB1 fixed the sound issue, guess i will have to wait for someone to root till i mess with it again.
and for anyone interested the unlock method via hidden menu worked for me doing that downgrade/upgrade. im on tmobile

mavicious said:
i was on NB1, sorry about the lack of info there.
i finally got it sorted out... well almost.
it turns out that flashing the modem again allowed me to get the phone back into working condition, after which i was able to downgrade to MK2
this worked fine and dandy with one issue remaining, i have no sound what so ever. no notification, music, video, nothing. wont even play music for that matter, says it cant open this type of file "mp3" even pandora wont play.
thanks for the replies.
Click to expand...
Click to collapse
You can't use the ODIN modem files. You can get root on NB1. Follow the guide specifically, then flash the modems from RockRatt's thread through Safestrap.

AT& T Galaxy S4 i337- trying to unlock, need help with Odin

I've got an AT&T Galaxy S4 running Android 4.3 with the mk2 modem. I'm trying to unlock to get it on T-mobile and dealing with the nasty region lock.
I've rooted my phone, but now I'm stuck trying to figure out how to flash my modem back to mdl.
I'm trying to used Method 2 in this thread, http://forum.xda-developers.com/showthread.php?t=2595457, but it doesn't give enough details for this noob, who knows nothing about Odin, other than I've downloaded and installed v. 3.09 on my laptop.
How do I use Odin to do this?

back2borabora said:
I've got an AT&T Galaxy S4 running Android 4.3 with the mk2 modem. I'm trying to unlock to get it on T-mobile and dealing with the nasty region lock.
I've rooted my phone, but now I'm stuck trying to figure out how to flash my modem back to mdl.
I'm trying to used Method 2 in this thread, http://forum.xda-developers.com/showthread.php?t=2595457, but it doesn't give enough details for this noob, who knows nothing about Odin, other than I've downloaded and installed v. 3.09 on my laptop.
How do I use Odin to do this?
Click to expand...
Click to collapse
I've tried so hard to software unlock an S4 I bought that was running 4.3. In the end, I just gave up. There's really no way you're going to get the old modem + servicemode on there again. I absolutely HATE Knox. I just ended up buying an unlock code for the phone, then doing the AWS mod.

back2borabora said:
I've got an AT&T Galaxy S4 running Android 4.3 with the mk2 modem. I'm trying to unlock to get it on T-mobile and dealing with the nasty region lock.
I've rooted my phone, but now I'm stuck trying to figure out how to flash my modem back to mdl.
I'm trying to used Method 2 in this thread, http://forum.xda-developers.com/showthread.php?t=2595457, but it doesn't give enough details for this noob, who knows nothing about Odin, other than I've downloaded and installed v. 3.09 on my laptop.
How do I use Odin to do this?
Click to expand...
Click to collapse
Install Samsung drivers, plug the phone in, open ODIN, and load the MDL modem into the CP slot. Flash and hope it works.

I337 AT&T S4 - Return to Stock (No WiFi)

I recently bit off more than I could chew with my S4 (I337). I had 4.4.2 KitKat on it and wanted to root it to add teathering. I decided thought there was no root for 4.4.2 so I thought I would try downgrading to 4.3 then root. This seemed best because I didn't like the way the SD card is handled in 4.4.2 and some of my apps (like ftp server) have stopped working.
When I got the phone back up from flashing with Odin it says it has version 4.3. My WiFi will not turn on. If I slide the switch to on it slides right back to off and the phone tells me that an operation was block (can't remember the full verbage. I have installed and attempted to install many things on my phone. I have used recovery mode / Odin3 and Kies (Kies doesn't allow much).
At this point I just would like to get my phone back to 4.4.2 with the WiFi working. Then I can restore my backup and be back to square one with a lesson learned.
I have an I337 that currently thinks it has version 4.3 on it. The baseband version is I337UCUFNC1 currently. The build number is JSS15J.I337UCUEMK2.
If anyone can help I would greatly appreciate it. I have read and tried many things over a two day period and finally decided to ask for help.

Had this issue before on my Bell Canada S4, but don't recall exact way to fix it.
Think the solution was to find an older (might be newer) stock. I think I used a different version like the Telus Canada version as well and it ended up working. Then you update through kies after.

jbrudda said:
I recently bit off more than I could chew with my S4 (I337). I had 4.4.2 KitKat on it and wanted to root it to add teathering. I decided thought there was no root for 4.4.2 so I thought I would try downgrading to 4.3 then root. This seemed best because I didn't like the way the SD card is handled in 4.4.2 and some of my apps (like ftp server) have stopped working.
When I got the phone back up from flashing with Odin it says it has version 4.3. My WiFi will not turn on. If I slide the switch to on it slides right back to off and the phone tells me that an operation was block (can't remember the full verbage. I have installed and attempted to install many things on my phone. I have used recovery mode / Odin3 and Kies (Kies doesn't allow much).
At this point I just would like to get my phone back to 4.4.2 with the WiFi working. Then I can restore my backup and be back to square one with a lesson learned.
I have an I337 that currently thinks it has version 4.3 on it. The baseband version is I337UCUFNC1 currently. The build number is JSS15J.I337UCUEMK2.
If anyone can help I would greatly appreciate it. I have read and tried many things over a two day period and finally decided to ask for help.
Click to expand...
Click to collapse
Root, install safestrap then flash this ROM and you will be good to go: http://forum.xda-developers.com/showpost.php?p=52167774&postcount=3

Thanks
muniz_ri said:
Root, install safestrap then flash this ROM and you will be good to go: http://forum.xda-developers.com/showpost.php?p=52167774&postcount=3
Click to expand...
Click to collapse
Quite a few steps in those threads but I got it working again. I really appreciate all the help/advice given. Now to decide if I want to remove the safestrap screen on boot. Again Thanks.

Same problem,need help plz
Hi guys,
I have the same problem as jbrudda.i wiped everything using Odin3_v3.09 and AP_I337UCUEMK2_1921628_REV06_user_low_ship_MULTI_CERT.tar . and now my wifi is not working. when i try to turn it on a security message pop up (the device has detected an application attempting to perform actions that are not permitted these actions have been blocked)and ask me to reboot, then it does a factory reset on its own. but the problem is still there no wifi. my baseband is diffrent than jbrudda's. mine is I337UCUAMDB. can someone plz help. thank you

karim8888 said:
Hi guys,
I have the same problem as jbrudda.i wiped everything using Odin3_v3.09 and AP_I337UCUEMK2_1921628_REV06_user_low_ship_MULTI_CERT.tar . and now my wifi is not working. when i try to turn it on a security message pop up (the device has detected an application attempting to perform actions that are not permitted these actions have been blocked)and ask me to reboot, then it does a factory reset on its own. but the problem is still there no wifi. my baseband is diffrent than jbrudda's. mine is I337UCUAMDB. can someone plz help. thank you
Click to expand...
Click to collapse
Wifi does not work because of the modem/kernel mismatch, i.e. MDB modem and MK2 kernel. Not sure what your goal was when you began flashing your phone but since you fortunately did not flash teh MK2 bootloader you are still able to locate the MDB full odin tar and flash back to stock which will resolve your issue.

muniz_ri said:
Wifi does not work because of the modem/kernel mismatch, i.e. MDB modem and MK2 kernel. Not sure what your goal was when you began flashing your phone but since you fortunately did not flash teh MK2 bootloader you are still able to locate the MDB full odin tar and flash back to stock which will resolve your issue.
Click to expand...
Click to collapse
I did Root it with saferoot and safestarp.the wifi didnt work so i had to find a script here on xda and i run it throughout universal init.d . i didnt like the way my phone was running . so i decided to unroot it . so you think im using the wrong TAR file ???

karim8888 said:
I did Root it with saferoot and safestarp.the wifi didnt work so i had to find a script here on xda and i run it throughout universal init.d . i didnt like the way my phone was running . so i decided to unroot it . so you think im using the wrong TAR file ???
Click to expand...
Click to collapse
It depends on what you are trying to accomplish. Are you trying to upgrade to MK2 or higher while maintaining your unlocked MDB bootloader?

muniz_ri said:
It depends on what you are trying to accomplish. Are you trying to upgrade to MK2 or higher while maintaining your unlocked MDB bootloader?
Click to expand...
Click to collapse
I'm just trying to take it back to the why it was. and upgrade to kitkat. i have now build number JSS15J.I337UCUEMK2 baseband : I337UCUAMDB
what do you think i should do?? I appreciate your help.

karim8888 said:
I'm just trying to take it back to the why it was. and upgrade to kitkat. i have now build number JSS15J.I337UCUEMK2 baseband : I337UCUAMDB
what do you think i should do?? I appreciate your help.
Click to expand...
Click to collapse
If you don't care about losing your MDB unlocked bootloader you can get to the latest kitkat firmware by flashing the NB1 full odin tar from here:
http://forum.xda-developers.com/showthread.php?t=2674223, then once flashing is complete go to settings/more/about phone/software update then take the ota update to NC1 which is the latest kitkat version for our phone.
But what I would do is keep your unlocked MDB bootloader and since you already flashed the MK2 AP file you can get your phone running well again by flashing the MK2 modem: https://mega.co.nz/#!pwESna5I!YK7EKG37xXIG1ReB-Z-mfSMoXNkXQ9t2EdMK9ofgJKg
From there, there are still a number of options available to get to kitkat which I won't get into.

muniz_ri said:
If you don't care about losing your MDB unlocked bootloader you can get to the latest kitkat firmware by flashing the NB1 full odin tar from here:
http://forum.xda-developers.com/showthread.php?t=2674223, then once flashing is complete go to settings/more/about phone/software update then take the ota update to NC1 which is the latest kitkat version for our phone.
But what I would do is keep your unlocked MDB bootloader and since you already flashed the MK2 AP file you can get your phone running well again by flashing the MK2 modem: https://mega.co.nz/#!pwESna5I!YK7EKG37xXIG1ReB-Z-mfSMoXNkXQ9t2EdMK9ofgJKg
From there, there are still a number of options available to get to kitkat which I won't get into.
Click to expand...
Click to collapse
I will try this steps and let you know.thanks a lot.

It worked "muniz_ri". Thanks a lot for your help, I really appreciate it. :laugh::good:

karim8888 said:
It worked "muniz_ri". Thanks a lot for your help, I really appreciate it. :laugh::good:
Click to expand...
Click to collapse
Hey guys.
I lost al sounds on my phone now.Wifi is running , I thought the fix worked but the sound is out now. any suggestions???
Thank you.

jbrudda said:
I recently bit off more than I could chew with my S4 (I337). I had 4.4.2 KitKat on it and wanted to root it to add teathering. I decided thought there was no root for 4.4.2 so I thought I would try downgrading to 4.3 then root. This seemed best because I didn't like the way the SD card is handled in 4.4.2 and some of my apps (like ftp server) have stopped working.
When I got the phone back up from flashing with Odin it says it has version 4.3. My WiFi will not turn on. If I slide the switch to on it slides right back to off and the phone tells me that an operation was block (can't remember the full verbage. I have installed and attempted to install many things on my phone. I have used recovery mode / Odin3 and Kies (Kies doesn't allow much).
At this point I just would like to get my phone back to 4.4.2 with the WiFi working. Then I can restore my backup and be back to square one with a lesson learned.
I have an I337 that currently thinks it has version 4.3 on it. The baseband version is I337UCUFNC1 currently. The build number is JSS15J.I337UCUEMK2.
If anyone can help I would greatly appreciate it. I have read and tried many things over a two day period and finally decided to ask for help.
Click to expand...
Click to collapse
I told you not to drink and root.

jbrudda said:
Quite a few steps in those threads but I got it working again. I really appreciate all the help/advice given. Now to decide if I want to remove the safestrap screen on boot. Again Thanks.
Click to expand...
Click to collapse
excited to give this a try. rooted with the downgrade method a couple months ago but left with a non-wifi device. my only issue is that the thread says it's for I337UCUFNC1 and our devices are on jss15j.i337ucuemk2. will this fix still work? I've heard on other threads on the subject that the modem kernel doesn't match up with the flashed rom or build number or something.
bux

karim8888 said:
Hi guys,
I have the same problem as jbrudda.i wiped everything using Odin3_v3.09 and AP_I337UCUEMK2_1921628_REV06_user_low_ship_MULTI_CERT.tar . and now my wifi is not working. when i try to turn it on a security message pop up (the device has detected an application attempting to perform actions that are not permitted these actions have been blocked)and ask me to reboot, then it does a factory reset on its own. but the problem is still there no wifi. my baseband is diffrent than jbrudda's. mine is I337UCUAMDB. can someone plz help. thank you
Click to expand...
Click to collapse
Do you already fix it??? cause i have the same problem

Same question, different thread!
Not even an hour ago did I answer the same question in a different thread: How do I get WiFi working on my S4?
Well here you go.
My original answer: http://forum.xda-developers.com/gal...-4-4-2-nb1-t2850878/post54978150#post54978150
The problem is, in order to get WiFi working, you need to install the NB1 modules, but to do that, you need to install Safestrap. However, you can not install Safestrap because the app keeps closing on you. There is a simple fix to this, which I will explain later. For now, just read this WHOLE post BEFORE you do anything, and keep in mind that I am NOT held liable if you mess up your phone. Use this at your own risk.
1.) Root your phone
If you're already rooted with something like SuperSU or Superuser, skip this. If not, read ahead. Download and install the Towelroot APK file attached to this post, open it, and click 'make it ra1n'. If your phone didn't reboot, now you have root (they need to trademark that). Now, down below, I also included the APK for SuperSU. Download and install it. Now open it. When you open it, let it install the 'Normal' way, not via the 'TWRP/CWM' way. Also, when it asks you to disable KNOX, say yes, wait a couple of minutes (it will still be loading) and reboot your phone. Open up SuperSU again, click 'Yes' to disable KNOX again, and now you have a good base to start from.
2.) Install Safestrap AFTER fixing the error
The error your are getting is easily fixed. Go to the Play Store and install 'SELinux Mode Changer'. Open it, grant it root access, and change the mode to 'Permissive'. Now, open up Safestrap again (you mentioned you already installed it), and it shouldn't force close. Click 'Install', and if the 'Reboot to Recovery' option below is not grayed out after that then it worked.
3.) Download and install the NB1 modules
On your phone, download the included NB1 modules ZIP file I attached for you, and once that is done you need to reboot. After the Galaxy S4 logo, you'll see a screen that says 'SAFESTRAP: DISABLED' and there will be a little robot. TIP: To enter Safestrap, press the menu button (physical, hardware key) under 'Recovery' at that screen. To continue to Android, press the back key (again, physical) under the 'System' tab. For now, press the menu button under 'Recovery'. Now, click 'Install' which should be in red, click 'Add zips', and navigate to your Downloads folder. Now click on the NB1 modules ZIP you just downloaded. Swipe to install, and reboot. This time, hit the back key under 'System'.
All done!
Now, Android should (and will) boot up, and you'll have working WiFi! If, for some odd reason, you don't have WiFi- do NOT panic! Just search around for the MF3 modules and flash those! All is good, all is good. A lot of this guide was taken from my post about my personal method of SIM unlocking the AT&T Galaxy S4 without the dialer codes or an AT&T SIM. It was just modified a little to work for you.
Remember, hit thanks!
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Those are my exact words. Also, the attached files (NB1 modules, SuperSU, Towelroot, etc.) can be found attached to my post in the link above. Have a good night, and best of luck! :good::good::good:

Had the Wifi Not Working - Fixed
muniz_ri said:
If you don't care about losing your MDB unlocked bootloader you can get to the latest kitkat firmware by flashing the NB1 full odin tar from here:
http://forum.xda-developers.com/showthread.php?t=2674223, then once flashing is complete go to settings/more/about phone/software update then take the ota update to NC1 which is the latest kitkat version for our phone.
But what I would do is keep your unlocked MDB bootloader and since you already flashed the MK2 AP file you can get your phone running well again by flashing the MK2 modem: https://mega.co.nz/#!pwESna5I!YK7EKG37xXIG1ReB-Z-mfSMoXNkXQ9t2EdMK9ofgJKg
From there, there are still a number of options available to get to kitkat which I won't get into.
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I just flashed I337MK2StockModem.tar.md5 and now it works!! I'm on the MK2 and rooted with saferoot and safestrap recovery 3.72

iqcomputers said:
I just flashed I337MK2StockModem.tar.md5 and now it works!! I'm on the MK2 and rooted with saferoot and safestrap recovery 3.72
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See the thread I started with a similar problem.
http://forum.xda-developers.com/galaxy-s4-att/help/rogers-samsung-s4-4-2-2-i337m-wifi-t3256535
Would I be able to use this fix?