Hello, I have a Rogers Canada SGH-I337M rooted running 4.4.2 I337MVLUFNE1 and I would like to try custom roms on my phone but I have never tried doing this before and I don't know what custom recovery I can use with this baseband version. I was going to try Safestrap but the versions for it that I saw on its XDA page were for NB1, MK2, and MF3 baseband versions. Will the latest version of Safestrap be compatible with my phone, or will I need to downgrade/upgrade my android version to get a different baseband version? If I will need to do so, would I need to unroot or make changes before changing the android version? Help would be greatly appreciated.
amb240 said:
Hello, I have a Rogers Canada SGH-I337M rooted running 4.4.2 I337MVLUFNE1 and I would like to try custom roms on my phone but I have never tried doing this before and I don't know what custom recovery I can use with this baseband version. I was going to try Safestrap but the versions for it that I saw on its XDA page were for NB1, MK2, and MF3 baseband versions. Will the latest version of Safestrap be compatible with my phone, or will I need to downgrade/upgrade my android version to get a different baseband version? If I will need to do so, would I need to unroot or make changes before changing the android version? Help would be greatly appreciated.
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Safestrap is primarily for the phones with a locked bootloader because we are not able to flash any other type of recovery. Since your bootloader is not locked, you should use philz touch or TWRP. That way you'll be able to flash kernels, as well.
Best advice I can give you is to read before flashing anything that way you know what you are getting yourself into. Since you are i337M, I would start with this thread... http://forum.xda-developers.com/showthread.php?t=2314494
guut13 said:
Safestrap is primarily for the phones with a locked bootloader because we are not able to flash any other type of recovery. Since your bootloader is not locked, you should use philz touch or TWRP. That way you'll be able to flash kernels, as well.
Best advice I can give you is to read before flashing anything that way you know what you are getting yourself into. Since you are i337M, I would start with this thread... http://forum.xda-developers.com/showthread.php?t=2314494
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Click to collapse
Okay, thank you very much for clarifying that my phone's bootloader was not actually locked, I just assumed it was because I couldn't find anyone else with that baseband version. I have also read the thread you linked, I am going to try TWRP.
Related
Hi there,
just got my hands on this international Note 3 and looking to root it and install a custom rom. I think I got all the information and softwares on how to root and flash custom recovery. but I'm just not sure if I need to upgrade my bootloader before flashing a custom rom? I don't even know what bootloader i'm on. but I do know that I'm still on 4.3 stock.
please let me know of anything that I need to do before flashing a custom rom.
thanks so much!
slamming_sammy1 said:
Hi there,
just got my hands on this international Note 3 and looking to root it and install a custom rom. I think I got all the information and softwares on how to root and flash custom recovery. but I'm just not sure if I need to upgrade my bootloader before flashing a custom rom? I don't even know what bootloader i'm on. but I do know that I'm still on 4.3 stock.
please let me know of anything that I need to do before flashing a custom rom.
thanks so much!
Click to expand...
Click to collapse
first step, flash with odin stock KK rom to have good bootloader, after root and put recovery you want and don't preoccupate anymore bootloader and flash custom rom or not...
rayman95 said:
first step, flash with odin stock KK rom to have good bootloader, after root and put recovery you want and don't preoccupate anymore bootloader and flash custom rom or not...
Click to expand...
Click to collapse
ok thank you!
I tried using kies to upgrade to 4.4 as i figured that would be the easiest way, but keep getting an error, so I do need to flash stock using odin. but I'm so confused as to which one to download. right now when I fire up kies, it shows this:
current firmware version: PDA:MJ7 /PHONE:MJ7 /CSC:MJ6 (ZTO)
Latest firmware version: PDA:NG3 / PHONE:NG2 / CSC:NG3 (ZTO)
can someone let me know which firmware I need to download from sammobile.com?
thanks so much.
oh please disregard. I didn't know sammobile.com had a place where we can search by country, etc. it's really cool. so I found what I needed.
thank you.
I was able to do an OTA update, so now I'm on kitkat 4.4; so my question is, now do I need to do anything for preparation in order to root?
thanks.
nothing to do
flash cf auto root and you re done...
thank you! you guys are great!
Hey guys,
My brother has the S4 i337 model and he's on 4.4.2
This phone is unlocked and he's using Tmobile on it.
For some reason it cannot find 4.4.4 via OTA and Kies
Is this because it's on tmobile or this model didn't get 4.4.4 yet.
Do I need to root it and flash a rom on it?
Thanks
krazyq said:
Hey guys,
My brother has the S4 i337 model and he's on 4.4.2
This phone is unlocked and he's using Tmobile on it.
For some reason it cannot find 4.4.4 via OTA and Kies
Is this because it's on tmobile or this model didn't get 4.4.4 yet.
Do I need to root it and flash a rom on it?
Thanks
Click to expand...
Click to collapse
Some models of the Samsung Galaxy S4 just didn't get the update, for instance my i337 didn't even get the 4.4.2 Kitkat update and was stuck on JellyBean. Your best bet is to just flash a 4.4.4 Rom on it. Clears out the bloated stock software.
Brandon.Black said:
Some models of the Samsung Galaxy S4 just didn't get the update, for instance my i337 didn't even get the 4.4.2 Kitkat update and was stuck on JellyBean. Your best bet is to just flash a 4.4.4 Rom on it. Clears out the bloated stock software.
Click to expand...
Click to collapse
that's really lame
So to make sure I do this the right way
I have to root the phone first
then install custom recovery
then flash rom right?
Or does the boot loader need to be unlocked?
Any rom recommendations?
I'd like for it to be stock so it's stable since my brother needs this for testing purposes
krazyq said:
that's really lame
So to make sure I do this the right way
I have to root the phone first
then install custom recovery
then flash rom right?
Or does the boot loader need to be unlocked?
Any rom recommendations?
I'd like for it to be stock so it's stable since my brother needs this for testing purposes
Click to expand...
Click to collapse
Yes correct, but if your boot loader is locked then you're going to need to download SafeStrap Recovery for locked bootloaders. Then once you have installed that, there's only very limited amount of Roms you can install because of the kernel, if you find a ROM that changes the kernel your phone won't boot. But a ROM that is fully working is called "GoldenEye ROM" its a 4.4.2 ROM but is really clean, stock, and clears out all that bloated nonsense. There's no 4.4.4 Roms for locked bootloaders yet.
Brandon.Black said:
Yes correct, but if your boot loader is locked then you're going to need to download SafeStrap Recovery for locked bootloaders. Then once you have installed that, there's only very limited amount of Roms you can install because of the kernel, if you find a ROM that changes the kernel your phone won't boot. But a ROM that is fully working is called "GoldenEye ROM" its a 4.4.2 ROM but is really clean, stock, and clears out all that bloated nonsense. There's no 4.4.4 Roms for locked bootloaders yet.
Click to expand...
Click to collapse
thanks for this info
I'll look into it
I currently have AT&T stock (I used to have a custom ROM then had to flash to stock ROM to be able to flash to another custom ROM--however, I accidentally flashed a newer version of the AT&T stock ROM which locked my bootloader and I could no longer flash to a custom ROM). I updated my AT&T stock ROM recently and now my back/menu buttons don't work, so I want to see if I can flash to a custom ROM now.
I don't remember the procedure to flash a custom ROM--do I first need to get root in order to unlock the bootloader to be able to flash ROMs (i.e. if I have root then I am guaranteed to be able to unlock bootloader in order to flash ROM)? Is the baseband version the only thing that determines whether I can unlock the bootloader and then be able to flash ROMs?
I currently have OK2 as broadband version and checked one of the stickied threads which said this:
" ROOT
OK2 -- No direct root method. Must Odin OC4 kernel, use Kingroot, then Odin OK2 kernel back."
Does that mean what I have to do is use Odin to get OC4 kernel, then use Kingroot, then Odin OK2 kernel and then I will be able to have root, which means I can then unlock my bootloader and be able to flash to ANY ROM (not just TouchWiz-based ROMs)? Is there anything else I need to consider or is this 100% foolproof? In the future, what should I be careful of in order to prevent getting my bootloader locked again--just that I don't flash a stock (AT&T) ROM that is known to lock back the bootloader?
Thank you all!
There's no way to unlock the bootloader if you have updated your device to the lastest firmware version. The only thing you can do is flash SafeStrap and use Stock Kernel Based ROMs which are compatible with Safestrap.
As regards to the procedure of rooting an OK2 firmware, I'm afraid I won't be able to help you.
Have a happy new year.
mindstormer said:
...however, I accidentally flashed a newer version of the AT&T stock ROM which locked my bootloader ...
Click to expand...
Click to collapse
I was just about to sit down and flash a stock ROM. Can you explain what you mean by this? Did you flash OK2 and it caused you a problem?
smock9 said:
I was just about to sit down and flash a stock ROM. Can you explain what you mean by this? Did you flash OK2 and it caused you a problem?
Click to expand...
Click to collapse
It was a while ago but I used to have I believe an MDL broadband version which meant I could flash any ROM available. I tried a different ROM, didn't like it, then decided to flash back to the stock ROM but accidentally flashed a newer version of it, which meant that my bootloader is now locked. With a locked bootloader, apparently I can only flash to a newer stock ROM (not other ROMs like Cyanogenmod) via Safestrap.
I think if you don't have the MDL broadband version you shouldn't worry about it anyway because it is locked and you will only be limited to flashing stock ROMs.
Slight correction
The previous entry is not entirely correct. Like the OP, I was originally on an unlocked bootloader on my i337. I'd purchased my i337 on the first day and eschewed OTA updates. I wanted to try a touchwiz based ROM, Hyperdrive, and in doing so I recall flashing the stock NB1 firmware. Every firmware beginning with NB1 has a locked bootloader and there has been no progress for more than a year in unlocking the bootloader again. This can limit you to either stock ROMs OR other touchwiz based ROMs like Hyperdrive. I love the Hyperdrive ROM (now on release 21) but its developer has moved on to a newer phone, so it's stuck at Android 4.4.2 and no one has picked up the project in many months. There are several other touchwiz based ROMs for the i337 version of the S4 which I have also tried but I prefer Hyperdrive's myriad customization, even without proper patching. I'll be moving on soon to the Nexus 6P as my daily driver, but would very much like to keep my S4 up to date with a custom ROM. Given the number of people that have been in this same situation, where a newer stock ROM from AT&T locked a previously unlocked bootloader, it's been surprising that the issues have not been overcome on a phone as popular as the Galaxy S4 was and continues to be. I've seen unlocked versions of the S4 selling for just under $400 in the last week of 2015.
Use the desktop version of Kingoroot to root and use Super su and update the binary. Don't forget to hit thanks if this helped.
The bootloader for the at&t s4 was never unlocked. The MDL bootloader had a flaw in it that allowed you to use LOKI which is a lock bypass, not a way to unlock the bootloader.
Hi all, I wanted to get some info on this topic, I have done allot of searching/reading and still have a bit of confusion. Currently I have a SGH-I337 AT&T S4 that is running 5.0.1 that I rooted. I want to update to the custom 6.0 ROM, which I downloaded from the JDC Team along with Gapps and superSU 2.52. I am going to follow the directions on their thread, but my issue is flashing the latest correct version of TWRP. I am able to boot into recovery and when Im flashing the TWRP version they have on their site (recovery,flash from SD, TWRP-2.8.7.2-F2FS.ZIP) I get a footer and authenticate error. Im assuming this version of TWRP is not compatible with this ver. S4? Or is there another way I have to flash it to the phone. Please point me to a thread that has the steps to do this if possible.
jgig73 said:
Hi all, I wanted to get some info on this topic, I have done allot of searching/reading and still have a bit of confusion. Currently I have a SGH-I337 AT&T S4 that is running 5.0.1 that I rooted. I want to update to the custom 6.0 ROM, which I downloaded from the JDC Team along with Gapps and superSU 2.52. I am going to follow the directions on their thread, but my issue is flashing the latest correct version of TWRP. I am able to boot into recovery and when Im flashing the TWRP version they have on their site (recovery,flash from SD, TWRP-2.8.7.2-F2FS.ZIP) I get a footer and authenticate error. Im assuming this version of TWRP is not compatible with this ver. S4? Or is there another way I have to flash it to the phone. Please point me to a thread that has the steps to do this if possible.
Click to expand...
Click to collapse
Your phone has the newer bootloader which is locked. Only variants with older bootloader, mdl and mdb will be able to flash twrp.
You can still use flashfire but your options are limited and marshmallow isn't one of them.
Airtioteclint said:
Your phone has the newer bootloader which is locked. Only variants with older bootloader, mdl and mdb will be able to flash twrp.
You can still use flashfire but your options are limited and marshmallow isn't one of them.
Click to expand...
Click to collapse
Thanks..
jgig73 said:
Hi all, I wanted to get some info on this topic, I have done allot of searching/reading and still have a bit of confusion. Currently I have a SGH-I337 AT&T S4 that is running 5.0.1 that I rooted. I want to update to the custom 6.0 ROM, which I downloaded from the JDC Team along with Gapps and superSU 2.52. I am going to follow the directions on their thread, but my issue is flashing the latest correct version of TWRP. I am able to boot into recovery and when Im flashing the TWRP version they have on their site (recovery,flash from SD, TWRP-2.8.7.2-F2FS.ZIP) I get a footer and authenticate error. Im assuming this version of TWRP is not compatible with this ver. S4? Or is there another way I have to flash it to the phone. Please point me to a thread that has the steps to do this if possible.
Click to expand...
Click to collapse
Currently I have the same phone and carrier...
If you are still interested in a custom recovery our only option is SafeStrap Recovery, you might want to check out this thread: http://forum.xda-developers.com/showthread.php?t=2448925. I was able to install SafeStrap and utilize NC1 Flasher to facilitate booting into SafeStrap Recovery with no problems whatsoever. Once you have SafeStrap Recovery operational on your phone you can also flash custom TouchWiz ROM's.
I hope that helps and, I'm far from an expert but, don't hesitate asking any questions!
PEACE
Here are my phone specs
Samsung Galaxy S4 AT&T Android Version 4.4.4,
Baseband ver. i337UCUFNJ4,
Build # KTU84p.i337UCUFNJ4
So far, I have successfully rooted my S4 device using this guide
Link: https://forum.xda-developers.com/ga...to-root-i337ucufnj4-4-4-4-11-13-2014-t2939553
So far, this guide worked out well. I wanted to install Lineage OS and TWRP. I downloaded the TWRP app and flashed to recovery. Everytime I reboot my phone, there is a samsung logo and underneath the logo is a unlocked padlock. When I boot the device in recovery mode (Home + Volume up + Power button), I am prompted an error saying "System software not authorized by ATT has been found on your phone". The phone boots perfectly normal if I don't go in recovery mode.
Need help on flashing my phone back to normal to its factory stock to retry this again.
The phone has a locked bootloader. It cannot run twrp and cannot run a custom ROM unless that ROM is based on a custom ROM.
Useful information can be found here: https://forum.xda-developers.com/showthread.php?t=2616221
audit13 said:
The phone has a locked bootloader. It cannot run twrp and cannot run a custom ROM unless that ROM is based on a custom ROM.
Useful information can be found here: https://forum.xda-developers.com/showthread.php?t=2616221
Click to expand...
Click to collapse
If the bootloader is locked, how was I able to root the device?
Rooting affects the ROM, not the bootloader.
There are several phones with a locked bootloader that can be rooted.
Root information: https://www.xda-developers.com/how-to-root/
Bootloader information: https://forum.xda-developers.com/wiki/Bootloader
audit13 said:
Rooting affects the ROM, not the bootloader.
There are several phones with a locked bootloader that can be rooted.
Root information: https://www.xda-developers.com/how-to-root/
Bootloader information: https://forum.xda-developers.com/wiki/Bootloader
Click to expand...
Click to collapse
Can I downgrade the software from Android 4.4.4 to 4.4.2?
I'm not sure if you can downgrade from 4.4.4 to 4.4.2 as I've never had an sgh-i337.
Was in a similar situation as you, so what I did was use safestrap to run Thor Rom, you can't downgrade to fix the bootloader nor install roms apart from those Touchwiz ones. Heads up about the Thor rom one: clear the data from the download manager before trying to download stuff from the play store. If you got any other issues with the rom feel free to ask (My S4 broke a while back though)
safwanz1 said:
Was in a similar situation as you, so what I did was use safestrap to run Thor Rom, you can't downgrade to fix the bootloader nor install roms apart from those Touchwiz ones. Heads up about the Thor rom one: clear the data from the download manager before trying to download stuff from the play store. If you got any other issues with the rom feel free to ask (My S4 broke a while back though)
Click to expand...
Click to collapse
Hi
I want to downgrade my Android 4.4.4 to Android 4.4.2 because there are more ROM options for 4.4.2 touchwiz. Is this possible on the att s4?
https://i.imgur.com/PtBz9Gd.jpg
On step #4, how do you install the ATT Kernel Modules?
s4androiduser said:
Hi
I want to downgrade my Android 4.4.4 to Android 4.4.2 because there are more ROM options for 4.4.2 touchwiz. Is this possible on the att s4?
https://i.imgur.com/PtBz9Gd.jpg
On step #4, how do you install the ATT Kernel Modules?
Click to expand...
Click to collapse
It should be, 4.4.2 is the lowest you can downgrade to. I'm not sure exactly but it might be done through Odin