Develop Bugs

[Q] Messed with Bootloader, Need Help!

So, I rooted my S3 (was on 4.3 via OTA) and tried to install CM 10.1.3. When I tried to flash it, it gave me errors. I looked it up and found out that it had something to do with my bootloader.
I blindly flashed this firmware, hoping that it would fix the problem. Then, I read in the thread in I'm not suppose to flash this if I already have the 4.3 OTA update and I'm like "Oh crap... "
Sure enough, when I try to turn on my phone, it wouldn't boot. At this point, I know it's hard bricked.
I go ahead and follow directions from this thread and I've successfully got the phone to download mode, but what do I do now?
Is there a stock bootloader I can use through Odin?

You have to flash the 4.3 firmware through Odin if I'm not mistaken.. It's the only one, you can't downgrade it anymore
Sent from my SGH-T999 using Tapatalk

serio22 said:
You have to flash the 4.3 firmware through Odin if I'm not mistaken.. It's the only one, you can't downgrade it anymore
Sent from my SGH-T999 using Tapatalk
Click to expand...
Click to collapse
My phone is already on 4.3, but I'm not suppose to flash the UVDMD5 Firmware while on 4.3, causing the brick. I can boot into the phone, but I need the SD card when I do since it has the 4.3 debrick image I found here.
I read the thread and I'm unsure if there's a fix for this.

Daoiod said:
My phone is already on 4.3, but I'm not suppose to flash the UVDMD5 Firmware while on 4.3, causing the brick. I can boot into the phone, but I need the SD card when I do since it has the 4.3 debrick image I found here.
I read the thread and I'm unsure if there's a fix for this.
Click to expand...
Click to collapse
Yes I know, you have to flash the 4.3 firmware again to get out of the brick.. Try searching or asking in the unbrick thread, you'll probably get more help there
Sent from my SGH-T999 using Tapatalk

serio22 said:
Yes I know, you have to flash the 4.3 firmware again to get out of the brick.. Try searching or asking in the unbrick thread, you'll probably get more help there
Sent from my SGH-T999 using Tapatalk
Click to expand...
Click to collapse
Alright, I'll try flashing a 4.3 firmware. If I flash this ROM, could I downgrade to something below 4.3 and flash the UVDMD5 firmware/bootloader since the ROM is Knox-free?
EDIT: I tried flashing and it didn't fix the brick. Alright, I think I need to focus on one problem at a time.

Daoiod said:
Alright, I'll try flashing a 4.3 firmware. If I flash this ROM, could I downgrade to something below 4.3 and flash the UVDMD5 firmware/bootloader since the ROM is Knox-free?
Click to expand...
Click to collapse
That's a big no.. You'll end up back where you started.. But you can just flash a custom recovery and then flash any ROM.. I believe the error you were getting was because the bootloader wasn't recognized by the updater script for the ROM and that's why it was throwing errors.. Once you add it to the script, it should flash fine
Sent from my SGH-T999 using Tapatalk

At this point, I don't really care about trying to install CM. I just want unbrick it and get back to stock 4.3. I tried flashing a stock 4.3, but that doesn't fix the brick.
I think it's because flashing the stock ROM doesn't change the bootloader. Maybe if I could revert the bootloader to stock, maybe it'll unbrick it?

Go to the unbrick thread, there you will find the best help.. Real experts there
Sent from my SGH-T999 using Tapatalk

Just flash the 4.3 firmware (not a rom) via Odin. That's it.

DocHoliday77 said:
Just flash the 4.3 firmware (not a rom) via Odin. That's it.
Click to expand...
Click to collapse
Thanks Doc, that did the trick!
And thank you for the firmware/ROM clarification!

Downgrading from 4.4.x to 4.3

I was wondering if I may run into any problems by doing this.
I know that on an AT&T phone (i747), if you do that, you may lose your modem and needs to be reflashed (you get a null IMEI)
Is it the same on a SGH-T999? I was planning to flash this ROM:
http://www.sammobile.com/firmwares/3/?download=26636
Thanks

There is no 4.4.2 to downgrade from for the T999.
If you just have a 4.4.2 Rom, you don't need to do anything.
The firmware you linked is the latest available so you can flash it regardless of what you have now.

There is no 4.4.2 update for the T999 so yes you can flash it but it is not a ROM, it is firmware, please do not confuse these two they are very different!

Yeah... I'm afraid I am confused. What I did was to flash this:
http://forum.xda-developers.com/showthread.php?t=2690947
Isn't that a ROM?
However I would like to go back to 4.3, so I was just wondering if I could have any problems.
Sorry for the noob questions. I think it was clear to me, but I'm afraid it's not...
Thanks

Yes that is a rom, what you linked to in the first post is firmware which contains more than just the system and that is where you run into problems when downgrading

serio22 said:
Yes that is a rom, what you linked to in the first post is firmware which contains more than just the system and that is where you run into problems when downgrading
Click to expand...
Click to collapse
So if I'm on 4.4.4 right now, is there a way to go back to 4.3?

_LEM_ said:
So if I'm on 4.4.4 right now, is there a way to go back to 4.3?
Click to expand...
Click to collapse
Yes, flash the link you provided in the first post or flash a 4.3 rom.. Understand this, flashing a rom will not determine if you can downgrade or not, flashing firmware will. Since there is no 4.4 firmware for the T999 you can still flash the 4.3 firmware. If there was a 4.4 firmware and you took the OTA or updated via Odin then the only thing you could do is flash a 4.3 rom, firmware will not be an option
Edit: oh and btw I accidently pressed the thanks button so you got a free one

serio22 said:
Yes, flash the link you provided in the first post or flash a 4.3 rom.. Understand this, flashing a rom will not determine if you can downgrade or not, flashing firmware will. Since there is no 4.4 firmware for the T999 you can still flash the 4.3 firmware. If there was a 4.4 firmware and you took the OTA or updated via Odin then the only thing you could do is flash a 4.3 rom, firmware will not be an option
Edit: oh and btw I accidently pressed the thanks button so you got a free one
Click to expand...
Click to collapse
Thanks. I understand better now. I have always been kind of confused between ROMs and firmwares.
PS: I triple thanked you.

[Q] Questions about going back to stock.

Hey guys,
I was running Cyanogenmod 11 for a while which I installed using the automatic tool online. During the summer I flashed Dirty Unicorns but I have issues with the camera and random rebooting. I just got a Galaxy Gear for Christmas and I've read that its only compatible with touchwiz roms.
I'm trying to go back to stock and I am ok with losing my root access.
I have an SGH-1747m on Baseband I747MVLUEMK5 and my service provider is Bell. The android version is 4.4.4 currently. Whats the easiest method to do this? I've read some concerning information that going back to an earlier version of android will soft brick your phone, but I believe the most current Bell firmware is still in Jelly Bean.
Is it as easy as downloading the correct firmware and flashing it using Clockworkmod Recovery?
Thanks

You should download the stock ROM from sammobile.com and flash it in Odin to get back to stock.

audit13 said:
You should download the stock ROM from sammobile.com and flash it in Odin to get back to stock.
Click to expand...
Click to collapse
The latest version available for my baseband is 4.3. Will I run into problems going from 4.4.4 to 4.3?

Flashing in Odin will flash everything, including the bootloader and modem.

audit13 said:
Flashing in Odin will flash everything, including the bootloader and modem.
Click to expand...
Click to collapse
Thanks. So if I'm understanding correctly I just flash the latest firmware released by my carrier (4.4.2)? Is there anything else to watch out for when choosing the firmware?
Also, before flashing should I make a backup with Clockwork Recovery or any other program? Will Clockwork Recovery still be present after flashing with ODIN?

ZombieLee said:
Thanks. So if I'm understanding correctly I just flash the latest firmware released by my carrier (4.4.2)? Is there anything else to watch out for when choosing the firmware?
Also, before flashing should I make a backup with Clockwork Recovery or any other program? Will Clockwork Recovery still be present after flashing with ODIN?
Click to expand...
Click to collapse
Yes, flash the latest firmware for your phone. Be sure it's firmware for the i747m and not anything else. Always make a backup if you ever screw up or want to go back to where you are now. You will lose everything by flashing the stock firmware with ODIN, even clockwork mod recovery.

Thanks. When I made a backup before going to Dirty Unicorns I used Clockwork Recovery. If Clockwork will be deleted by flashing with ODIN, how would I utilize that backup if I needed it? Should I use another program to back up?
EDIT: I flashed it and everything went smoothly. Sincere thanks to everyone who gave me help!

reverting to 4.1.1

i have the s3 att on a 4.4.4 CROM. the baseband says ...LK3. can i use any guide using odin to go back to 4.1.1 stock unrooted and then use OTA updates to get the latest baseband/bootloader/modem? just want to make sure before i do it. i hear this is the safest way and i want to make sure i have met the requirements before i do it so i dont end up having a brick! (not sure if it matters but i have never used OTA updates before)
thanks in advance.

Is your bootloader also the lk3? If the modem and bootloader are lk3, you can use Odin to flash back to stock using firmware from sammobile.com.

Ok, I'm on a similar boat. I tried several AOSP based ROMs, and while I like most of them a lot more than stock touchwiz, they all present the same problems:
- Camera stops working sometimes and I have to reboot device;
- Camera won't record videos in 1080p, even when it's selected in the settings;
- Cannot make video calls on Skype longer than 5 seconds before the call drops;
- Disconnecting a bluetooth media device while music is streaming causes sounds to stop working;
- Tap to pay doesn't work at all;
So because of these problems, I want to go back to stock . My phone is the AT&T version. Currently I'm running Carbon Rom with KitKat 444. The baseband version is I747UCUFNJ1. The latest version of the stock ROM available on sammobile is:
Version: Android 4.1.1
PDA: I747UCDLK3
CSC: I747ATTDLK3
MODEM: I747UCDLK3
Would I be able to revert my phone back to stock with Odin? If not, what would I have to do to revert? Am I stuck with custom ROMs?
I'm pretty new to this so I'd appreciate anybody's help.

If your bootloader and modem is the lk3, you should be able to Odin back to stock 4.1.1.

Ok, how do I find out if they are? And if they are not, do I have any other options?

Download and install the Samsung Info App from the Playstore. Report back here with your bootloader and modem.

audit13 said:
Download and install the Samsung Info App from the Playstore. Report back here with your bootloader and modem.
Click to expand...
Click to collapse
Ok, according to the Phone INFO *Samsung* app:
Baseband Version:
I747UCUFNJ1
Bootloader Version:
I747UCUFNJ1
There was no other modem info reported besides this
Modem Board:
MSM8960

someone correct me if i'm wrong.you cannot downgrade bootloader or it will brick. there is no stock rom for NJ1. this link will take you to a stock based 4.4.2 ROM which is safe to flash with the NJ1 bootloader/modem.
http://forum.xda-developers.com/showthread.php?t=2848080
"all i can really do , is stay out of my own way and let the will of heaven be done"

mrrocketdog said:
someone correct me if i'm wrong.you cannot downgrade bootloader or it will brick. there is no stock rom for NJ1. this link will take you to a stock based 4.4.2 ROM which is safe to flash with the NJ1 bootloader/modem.
http://forum.xda-developers.com/showthread.php?t=2848080
Click to expand...
Click to collapse
Well, that's a bummer if I can't restore stock rom to the phone. So there is absolutely no way of safely downgrading the booatloader?

nope. it will brick your phone if you try to downgrade your bootloader.
"all i can really do , is stay out of my own way and let the will of heaven be done"

Have you tried CM-11-based or TW-based ROMs?

mrrocketdog said:
someone correct me if i'm wrong.you cannot downgrade bootloader or it will brick. there is no stock rom for NJ1. this link will take you to a stock based 4.4.2 ROM which is safe to flash with the NJ1 bootloader/modem.
http://forum.xda-developers.com/showthread.php?t=2848080
Click to expand...
Click to collapse
I tried to push that ROM the phone using adb to flash it with ClockWorkMod, but the file is 1.7 GB and the phone always shuts itself down during the push process... So I wasn't able to try that. Also, the instructions say you're supposed to be on UCUFNE4. Are you sure it's safe to flash it on I747UCUFNJ1?
audit13 said:
Have you tried CM-11-based or TW-based ROMs?
Click to expand...
Click to collapse
I have tried CM11 and Carbon ROM, which is CM based, both have all the same problems. I haven't tried TW-based ROMS. Do you have any suggestions?

What do you mean by the phone shuts down? Did you try copying the ROM to a microSD card?
Did you notice any bootloader or modem files in the S3Rx 4.0 (11-9-14) ROM? It may not include a modem or bootloader. In step 1 of the flash process, it says "AT&T I747 users should update bootloaders and modem to NE4 http://forum.xda-developers.com/gala...pdate-t2808654 I747M and T999 users need to be on 4.3 firmware or ROM will not boot. "

the link i posted is TW. post #1306 claims is o.k. to flash with UFNJ1.
did not see any mention of bootloader or modem in changelog or in list of 'extra' features.
"all i can really do , is stay out of my own way and let the will of heaven be done"

audit13 said:
What do you mean by the phone shuts down? Did you try copying the ROM to a microSD card?
Did you notice any bootloader or modem files in the S3Rx 4.0 (11-9-14) ROM? It may not include a modem or bootloader. In step 1 of the flash process, it says "AT&T I747 users should update bootloaders and modem to NE4 http://forum.xda-developers.com/gala...pdate-t2808654 I747M and T999 users need to be on 4.3 firmware or ROM will not boot. "
Click to expand...
Click to collapse
I reboot the phone in ClockWorkMod recovery. Then I go to the command prompt and type:
Code:
adb push S3Rx_UCUFNE4_AROMA_11-9-14.zip /sdcard/
It starts pushing the file to the phone, but after a while, the phone screen goes black, and I get a "Protocol failure" on the command prompt. After this the power button no longer works, I have to do a battery pull for the phone to work again. The phone has 10 GB of storage left so it didn't run out of space. The USB chord is brand new so I don't think it's that either. It worked fine before when I pushed other smaller roms.
In another question, would this process allow me to downgrade the modem and restore stock rom?
http://forum.xda-developers.com/showthread.php?t=1831898

i am pretty sure that since youre on MJ1 , your bootloader and modem have to match.
"all i can really do , is stay out of my own way and let the will of heaven be done"

Did you try flashing the card from an external microSD card?
AT&T never released a stock ROM for the i747 beyond 4.1.1 afaik; therefore, you cannot get back to stock unless you flash an OTA ROM that has been compiled for flashing in Odin.
I do not recommend mixing and matching bootloaders and modems as a mismatch may result in a hard brick.
Downgrading only the modem will not allow you to flash back to stock.

audit13 said:
Did you try flashing the card from an external microSD card?
Click to expand...
Click to collapse
I haven't tried flashing from external microSD card as I don't have one.
audit13 said:
AT&T never released a stock ROM for the i747 beyond 4.1.1 afaik; therefore, you cannot get back to stock unless you flash an OTA ROM that has been compiled for flashing in Odin.
I do not recommend mixing and matching bootloaders and modems as a mismatch may result in a hard brick.
Downgrading only the modem will not allow you to flash back to stock.
Click to expand...
Click to collapse
So you're basically telling me I'm stuck with custom roms unless I find a 4.4.2 OTA ROM I can flash with Odin (which doesn't appear to exist)?
---------- Post added at 05:24 PM ---------- Previous post was at 05:01 PM ----------
Would it be safe to try this:
http://forum.xda-developers.com/showthread.php?t=2788357
Even though I'm on I747UCUFNJ1 and not on I747UCUFNE4?

Once you upgrade to the 4.3 or newer bootloader on the i747, you are stuck with either custom ROMs or OTA ROMs that have been compiled for flashing in Odin or CWM/TWRP.
You can try flashing the NE4 ROM because it doesn't appear to include a bootloader or modem. The first post says "Prerequisites include a minimum of a 4.3 bootloader and modem.
If you are not on the official 4.4.2 bootloaders and modem then you will need to flash ktoonsez kernel."

Thanks audit13 and mrrocketdog for all the help. I was able to get the AROMA rom installed on the phone. All functionalities lost with AOSP ROMs are back working so that's a plus. Still can't get updates OTA updates but this phone is probably not gonna have any new ones. Still hopeful that lolipop based AOSP ROMs fix the problems I had, but I'm not holding my breath.

[Q] Update Baseband - From M919Uvufnk2 To M919Uvufoh3

Hi,
Am on CM12.1, T-Mobile Galaxy S4 SGH-M919, Rooted, Android 5.1.1
How i can update the Baseband - From M919Uvufnk2 To M919Uvufoh3 using TWRP?

You can't. You have to use Odin.

HampTheToker said:
You can't. You have to use Odin.
Click to expand...
Click to collapse
Ok, i can use ODIN. But from where i can find the baseband for rooted custom ROM (CM) SGH-M919?

My method...Backup your current rom. Odin the oh3 stock release, odin cf root, odin twrp, backup the new stock rom, restore prior backup.
Sent from my SM-T320 using XDA Premium HD app

mgp53 said:
My method...Backup your current rom. Odin the oh3 stock release, odin cf root, odin twrp, backup the new stock rom, restore prior backup.
Sent from my SM-T320 using XDA Premium HD app
Click to expand...
Click to collapse
Hmmm...thats what i am actually thinking as of now....but looking for easy alternative like if we get the flashable zip or something of this baseband i can just flash it without taking backup of ROM and reinstall the ROM etc.....
But am looking for a site where i can download these basebands....

i take it you are trying to update the modem/baseband ihere you go. Must be done thru odin.
http://forum.xda-developers.com/galaxy-s4-tmobile/general/foh3-modem-bin-mdl-bootloader-t3191094
IMPORTANT: DO NOT CHANGE THE BOOTLOADER unless u KNOW EXACLY what you are doing...changing bootloader to the wrong bootloader will brick your device and some modem packages conatin bootloader. so make sure that you are getting a ODIN file that only contains the modems and no bootloader!
if you wish to properly update the bootlaoder and baseband properly ....just ODIN the OFFICIAL samsung release for your device and then re-root and reinstall recovery and then your rom.

XeoNoX said:
i take it you are trying to update the modem/baseband ihere you go. Must be done thru odin.
http://forum.xda-developers.com/galaxy-s4-tmobile/general/foh3-modem-bin-mdl-bootloader-t3191094
IMPORTANT: DO NOT CHANGE THE BOOTLOADER unless u KNOW EXACLY what you are doing...changing bootloader to the wrong bootloader will brick your device and some modem packages conatin bootloader. so make sure that you are getting a ODIN file that only contains the modems and no bootloader!
if you wish to properly update the bootlaoder and baseband properly ....just ODIN the OFFICIAL samsung release for your device and then re-root and reinstall recovery and then your rom.
Click to expand...
Click to collapse
Perfect....I will use this one....

And on S4 you don't even need to root before flashing TWRP and your ROM of choice. Just double flash the stock release with ODIN, let it boot up and make sure all is well, go into Camera to let it see if it needs a firmware update (happens automatically first time you run stock camera app), and when satisfied your phone is good, go into download mode, take TWRP + whatever else you want.