4.3 mk2 or mj9 - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

Hey everyone. What will the baseband version be for 4.3? I see people saying its I337UCUEMK2 and I see others say its I337UCUEMJ9. Which one is it?? Its driving me nuts... I'm trying to look and see if people already have a root option for 4.3 for the gs4 and I need to know whether to search for MK2 or MJ9. If anyone could tell me which one that would be great. Thank you in advance. Much appreciated!
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Mk2 is the latest. Mj9 was an aborted upgrade by att.

jd1639 said:
Mk2 is the latest. Mj9 was an aborted upgrade by att.
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Excellent thank you very much!
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Related

Any mj9 stock rom?

I am looking for a stock mj9 rom, I'm currently on mdl, and I will like to update but without losing my root
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lthary said:
I am looking for a stock mj9 rom, I'm currently on mdl, and I will like to update but without losing my root
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why would u want to update to mj9? stay at mdl and enjoy your unlock bootloader dude. I regret for updating my phone. i would trade my phone to get the mdl s4
xuanphucn said:
why would u want to update to mj9? stay at mdl and enjoy your unlock bootloader dude. I regret for updating my phone. i would trade my phone to get the mdl s4
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He means a ROM he could flash without losing the exploit, not the actual update.
Just wait and one should be created like it was for MF3, otherwise you'll have to settle for any other 4.3 ROM. You could always check the international section for their stock 4.3 or something.
I hope someone will create one
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lthary said:
I hope someone will create one
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In the mean time you could try this. It's based on mj9. http://forum.xda-developers.com/showthread.php?p=42294395

can i go back to 4.2.2 from 4.3?

hey guys... im on 4.3 MK2 rooted, can i install a 4.2.2 rom stock or custom ?? with 4.2.2 modem and bootloader.
thanks.
If you updated by keeping the MF9 bootloader you can go back to stock. If you took the OTA however, you can only downgrade to 4.2 with a custom ROM.
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rodmc123 said:
hey guys... im on 4.3 MK2 rooted, can i install a 4.2.2 rom stock or custom ?? with 4.2.2 modem and bootloader.
thanks.
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i tried eveything so i can downgrade and how he said is the only way. i been trying everything but no luck. i hope your not trying to return your phone because if u have it rooted and have "kernel not seandroid enforcing " then wait until some dev can fix that
frostedunit said:
If you updated by keeping the MF9 bootloader you can go back to stock. If you took the OTA however, you can only downgrade to 4.2 with a custom ROM.
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but i can downgrade to 4.2 (100% 4.2) using a custom rom?? or i will be on 4.2 but with the same new bootloader?
what custom rom would work in my case? if you can give me a link to one.. there are so many here.
If you're on the MJA or MK2 bootloader, you're stuck with it.
And why would you want to go back to 4.2? Any ROM would work, but seems kind of pointless.
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frostedunit said:
If you're on the MJA or MK2 bootloader, you're stuck with it.
And why would you want to go back to 4.2? Any ROM would work, but seems kind of pointless.
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Sim unlock bro.
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imbmiller said:
Sim unlock bro.
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I believe you just need to downgrade the modem. Not sure tho.
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ROMANTiC KiD said:
I believe you just need to downgrade the modem. Not sure tho.
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i downgraded the modem to mdc and did the unlock process. it worked, i can make and receive calls but when the phone is going to 3g i get a error message "LTE esm 29 emm-x cannot establish wireless data connection" nobody else had that issue.. i dont know if hte fact that my phone is not activated on spring is relevant.. it shouldn't be, because im using the phone outside the US.
i dont know what to do to make this thing work.. i have flashed from mdc to mk2 or mja like 5 times and i always get the same message.

About to buy (another) S4 tonight, please help!

Hey guys, well I'm back in action! After dumping my S4 a few months ago, I am getting another one tonight. Ever since I saw the 4.3 update on my gf's S4, I saw that things have smoothed out and things are the way they should be!
Long story short, I want to see if the one I'm getting can be rooted. It is on 4.2.2 and the baseband is I3373CUFCMF3. Am I good to root it? I've been out of the S4 game for a while, so I don't know. If I can root it, can I run 4.3?
Any help would be appreciated, thanks!
I'd try to get a MDL one so you could just flash a 4.3 custom ron
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Most, if not all current S4's will have MF3 firmware preinstalled. I doubt any store would have MDL firmware. Those devices would have had to be sitting there since early summer.
WizeGuyDezignz said:
Hey guys, well I'm back in action! After dumping my S4 a few months ago, I am getting another one tonight. Ever since I saw the 4.3 update on my gf's S4, I saw that things have smoothed out and things are the way they should be!
Long story short, I want to see if the one I'm getting can be rooted. It is on 4.2.2 and the baseband is I3373CUFCMF3. Am I good to root it? I've been out of the S4 game for a while, so I don't know. If I can root it, can I run 4.3?
Any help would be appreciated, thanks!
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Yes, with MF3 you can root. You can then install safestrap and do some roms.
However if you take the 4.3 update you lose the ability to safestrap and use some roms, but you should still be able to root. I am not 100% as I just kept mf3 and put a 4.2.2 rom on it.
Ok, thanks for the responses. Can I flash any ROM with Safestrap or just some? Can I flash a custom 4.3 ROM for example?
Thanks!
You cannot install anything that's not touchwiz and anything above 4.2.2
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WizeGuyDezignz said:
Ok, thanks for the responses. Can I flash any ROM with Safestrap or just some? Can I flash a custom 4.3 ROM for example?
Thanks!
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Your very limited with roms using safestrap. Even then, the ones that work, might not work all the way. If you had MDL, you could use any rom if you flash loki-doki.
Just ask if they have one with MDL firmware. Doesn't hurt to ask, right?
Thanks for the responses guys! I will see if I can get a hold of a MDL phone.
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Quick question. If I'm on MF3, can I jtag back to MDL?
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WizeGuyDezignz said:
Quick question. If I'm on MF3, can I jtag back to MDL?
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No.
WizeGuyDezignz said:
Quick question. If I'm on MF3, can I jtag back to MDL?
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Get a device that isn't as locked down as the s4 or note 3. Maybe nexus 5? Unless you can live with safestrap or just root. Which I can. If your a ROM flashaholic than stay away.
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Thanks guys, I just scored a MDL on swappa. I will be back soon to root and rom!
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Nice!
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[Q] How to update to newest MJE Tar????

I have a retail VZW note 3 and I've been on the jellybeans ROM since november 2013. I haven't updated to the newest MJE firmware so until I do, I cannot update to any newer ROMS. Can some please point me in the right direction on how to do this??? I've tried searching and haven't found how to do it....Thanks in advance
This thread has all you need to use Odin and flash MJE
http://forum.xda-developers.com/showthread.php?t=2483380
sent from tapatalk....probably while pooping.
Exactly what I needed! Thank you, really appreciate it!
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joeyc1123 said:
Exactly what I needed! Thank you, really appreciate it!
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No problem
sent from tapatalk....probably while pooping.

[Q] Update firmware AT&T SAMSUNG GALAXY S4, SGH-I337, MF3, 4.2.2 to 4.3 or 4.4.2?

How do you update firmware from AT&T SAMSUNG GALAXY S4, SGH-I337, MF3, 4.2.2 to 4.3 or 4.4.2?
joeydija said:
How do you update firmware from AT&T SAMSUNG GALAXY S4, SGH-I337, MF3, 4.2.2 to 4.3 or 4.4.2?
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Look in the general forum. You'll need to use Odin
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jd1639
jd1639 said:
Look in the general forum. You'll need to use Odin
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Thank you for the reply.
I've searched the general forum, but I'm having trouble sifting through all the information.
Have you ever updated your firmware for a rooted phone?
I understand how to use Odin, but I need a tutorial.
I'll look again.
?...
I'm still not sure what to do, I really want to experience the most out of my rooted phone.
I'd like the newest advancements...
How bout this question, anyone reading this have my phone type and what did you do with your phone?
joeydija said:
I'm still not sure what to do, I really want to experience the most out of my rooted phone.
I'd like the newest advancements...
How bout this question, anyone reading this have my phone type and what did you do with your phone?
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Flash the all in one tar file from this http://forum.xda-developers.com/showthread.php?p=49687770. Then use saferoot to root. http://forum.xda-developers.com/showthread.php?p=48392009
If you want nb1 then follow this http://forum.xda-developers.com/showthread.php?p=51067706
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jd1639 said:
Flash the all in one tar file from this http://forum.xda-developers.com/showthread.php?p=49687770. Then use saferoot to root. http://forum.xda-developers.com/showthread.php?p=48392009
If you want nb1 then follow this http://forum.xda-developers.com/showthread.php?p=51067706
Sent from my Nexus 5 using XDA Free mobile app
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Wow, thanks so much!

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