[Q] Do you guys have locked bootloaders over here? - T-Mobile, Samsung Galaxy SIII

I know the old TMO S3 ROM's were all easy to root & install AOSP on.
But coming from the ATT S4 world, where all hell has broken loose in the form of locked bootloaders, I figured I'd double check with you guys before I flash my buddies phone.
Plan is the following:
1) ODIN the phone to pre-rooted T999_UVUEMJC via Route66 (see, I searched a little ).
2) Download & install Goo Manager to install TWRP recovery.
3) Install 4.3 version of SlimBean AOSP (not a fan of 4.4 yet).
Will that work okay or will I accidentally be ODIN'ing a firmware that suddenly locks the bootloader?
Thanks and sorry for the forum clutter

You can odin the firmware or just odin flash a custom recovery and flash away. Slim or LiquidSmooth are the best bets
Sent from my Nexus 7 using XDA Premium 4 mobile app

@CZ Eddie
I wouldn't do that. The hell that happed to S4 happened here as well. Bootloader crap is for us too. Follow the process you described except instead of UVUEMJC version try UVDMD5 of Root66. The MJC will lock the bootloader.

I'm on UniverseS4 I loveit 99.99999% sstable
~SanaDrate + LTE

It's not really a true bootloader lock, as you can still Odin a recovery and flash whatever you want. You just get the Knox enforcement and the inability to flash am older bootloader.
With that said, I still wouldn't touch MJC with a 10' pole until/unless somebody figures out a way to spoof Knox, at least for warranty claims.
Sent from my SGH-T999 using XDA Premium 4 mobile app

Perseus71 said:
@CZ Eddie
I wouldn't do that. The hell that happed to S4 happened here as well. Bootloader crap is for us too. Follow the process you described except instead of UVUEMJC version try UVDMD5 of Root66. The MJC will lock the bootloader.
Click to expand...
Click to collapse
Adreaver said:
It's not really a true bootloader lock, as you can still Odin a recovery and flash whatever you want. You just get the Knox enforcement and the inability to flash am older bootloader.
With that said, I still wouldn't touch MJC with a 10' pole until/unless somebody figures out a way to spoof Knox, at least for warranty claims.
Sent from my SGH-T999 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Wow, so glad I asked. Thanks a bunch guys!!
Sorry to hear that even if it's not the "end of the earth" for you yet, that you are now inching towards losing your flash freedoms.

Related

[Q] Official 4.3 Rooting questions

For starters, I am using an SGH-i747, that shipped with 4.3.
Now, I am not new to rooting/modding my phone. My previous phone, the Samsung Infuse 4G, was very easy to root, install recoveries/ flash ROMs, and unroot. I could go from stock 2.2 to 4.4 in 30 minutes. And I did, a lot. But reading up for the past few days on this phone is making me feel like I have no idea what I'm doing. Plus, there are very mixed results with rooting the GS3 on 4.3 successfully.
''Read the rooting tutorials'', I have, they are from 2012/ early 2013. It is 2014, thing have changed. One, there's apparently this ''KNOX'' thing that triggers when you flash anything that's not from Odin, and there's no back-to-stock 4.3 or any previous Android version because the bootloader has changed. I'm not really worried about Knox ending my warranty forever, I'm worried about the event that I somehow brick my phone, there's no going back to stock.
Looking at the CF-auto root by Chainfire, the amount of bad votes HERE for the SAMSUNG SGH-I747 is disheartening. Also, that the post hasn't been edited since Nov. 2012...
Unless someone has a surefire way to get root (and maybe a custom recovery) I would like advice on if THIS video looks legit.. If it is, then after I gain root, should I be able to download a recovery from ROM Manager or something similar? (I'm asking because that's how easy it was on my Infuse)
I feel very weird posting in the QA section, as I have only done so maybe 4 times...but any help would be greatly appreciated. If I need to clear anything up, for some reason, feel free to tell me. I'll probably be hovering over this thread like a vulture.
You should not need root to install a custom recovery. You can install a custom recovery from Odin which will trip the Knox counter.
audit13 said:
You should not need root to install a custom recovery. You can install a custom recovery from Odin which will trip the Knox counter.
Click to expand...
Click to collapse
But the things I want to install from the recovery will require root. Would using the custom recovery to flash a superuser.apk give me root access?
Edit; thought after posting, would flashing a ROM with superuser work with just having a custom recovery?
I prefer installing a custom recovery via Odin rather than ROM manager. Most ROMs are pre-rooted. If it's not, you can download SupeUS or Superuser and flash in recovery.
In my opinion, the safest root method is from Method 2 in this thread.
http://forum.xda-developers.com/showpost.php?p=47747640&postcount=1
If you can flash TWRP in step 2, then I would immediately make a full backup, before moving to step 3. If step 2 fails, then your operating system is not affected. Just your counters and maybe your recovery. And if step 2 succeeds, then an immediate backup of your operating system before removing anything or adding any root might save you a lot of headaches latter on if something goes wrong.
shortydoggg said:
In my opinion, the safest root method is from Method 2 in this thread.
http://forum.xda-developers.com/showpost.php?p=47747640&postcount=1
If you can flash TWRP in step 2, then I would immediately make a full backup, before moving to step 3. If step 2 fails, then your operating system is not affected. Just your counters and maybe your recovery. And if step 2 succeeds, then an immediate backup of your operating system before removing anything or adding any root might save you a lot of headaches latter on if something goes wrong.
Click to expand...
Click to collapse
Oh boy, I hope you're right.
Edit 1; ok, backing up now, this works.
Edit 2; after a successful backup and pressing reboot, TWRP prompted me that I hadn't yet installed SU, which it then allowed me to install. Reboot and open the app drawer, it was there, but had to update from the play store. Voila, rooted with a custom recovery, thank you to both for assistance! It was easier than I thought it was going to be.
No problem.
Don't know if you are aware you can flash 4.3 via S3Rx in the development section it is pre rooted you can use the MJ2 bootloader and you can flash back and forth as you please. Just don't use the MJB bootloader you should be fine.
Good luck and Happy flashing.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
theramsey3 said:
Don't know if you are aware you can flash 4.3 via S3Rx in the development section it is pre rooted you can use the MJ2 bootloader and you can flash back and forth as you please. Just don't use the MJB bootloader you should be fine.
Good luck and Happy flashing.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
I guess since I already have a thread opened, I'll ask this, too;
What's the difference between the Android Development and the Original android Development? The forum for my previous phone only had 1 development section, so most of the layout of this entire forum is new to me.
theramsey3 said:
Don't know if you are aware you can flash 4.3 via S3Rx in the development section it is pre rooted you can use the MJ2 bootloader and you can flash back and forth as you please. Just don't use the MJB bootloader you should be fine.
Good luck and Happy flashing.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
How is the MJ2 bootloader going to be used when the phone already came shipped with 4.3? It already has the MJB bootloader.
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
MJ2 wont flash very well. But they also have it with the MJB bootloader and stuff so no fear just use the correct stuff and you shall get it aswell .
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

[Q] Galaxy S3 downgrade from android 4.3 to 4.1.2

I have a T-Mobile Samsung Galaxy S3 (SGH-T999) and I made the mistake of allowing an upgrade??? to android 4.3 which has been very unstable for me. T-Mobile, Samsung, and Google all say that there are no updates to 4.3 and I can’t downgrade, so basically I’m out of luck.
Can I downgrade 4.3 to 4.1.2 without bricking my phone and hopefully without voiding my warranty? If so, please give me some instructions. I downloaded Odin 3.07 and firmware: root66_TMO_T999UVDMD5.7z. Thanks a million.
I don't think it's possible to downgrade anymore due to Knox. There was a thread talking about it
Maybe you should check it out.
Sent from my C6916
You cannot downgrade without voiding your warranty
Sent from my SGH-T999 using Tapatalk
Dont flash md5root66 after update!
newbee123 said:
I have a T-Mobile Samsung Galaxy S3 (SGH-T999) and I made the mistake of allowing an upgrade??? to android 4.3 which has been very unstable for me. T-Mobile, Samsung, and Google all say that there are no updates to 4.3 and I can’t downgrade, so basically I’m out of luck.
Can I downgrade 4.3 to 4.1.2 without bricking my phone and hopefully without voiding my warranty? If so, please give me some instructions. I downloaded Odin 3.07 and firmware: root66_TMO_T999UVDMD5.7z. Thanks a million.
Click to expand...
Click to collapse
if you flash the root66 of the md5 firmware via odin after you have already upgraded to 4.3 you will HARD BRICK your phone. Taking the 4.3 ota updates your bootloader and flashing anything other than 4.3 in odin will wreck your life.
You need to download the root66mjc firmware here:
http://www.androidfilehost.com/?fid=23212708291682181
And flash it in odin. Then from there install a custom recovery and download a rom of your choosing and the compatible modem. I recommend you download the md5 modem. Then you're gonna wanna boot into recovery and flash the rom and the modem only (kernels are ok of course) JUST NO BOOTLOADERS. I don't even know if you can do that in recovery but trying to mess with the new BL will brick your face I mean phone.
full steps?
so does anyone have any full list of steps and links on where to get the modems and all to downgrade 4.3 with knox down to 4.1.2
pamma83 said:
so does anyone have any full list of steps and links on where to get the modems and all to downgrade 4.3 with knox down to 4.1.2
Click to expand...
Click to collapse
Would you try reading the thread before posting ? Its not that long. You will see your answer provided by 3 different individuals.
Perseus71 said:
Would you try reading the thread before posting ? Its not that long. You will see your answer provided by 3 different individuals.
Click to expand...
Click to collapse
this thread had 4 posts before i posted and only 1 talks about what to do..where are you seeing 3 different people saying what to do and how???
and i asked where to get the modems and all.. do you see anyone saying where to get them??
pamma83 said:
this thread had 4 posts before i posted and only 1 talks about what to do..where are you seeing 3 different people saying what to do and how???
and i asked where to get the modems and all.. do you see anyone saying where to get them??
Click to expand...
Click to collapse
I was referring to the 3 persons who responded to the OP's question similar to yours. @jtl_777's response is pointing to the 4.3 Firmware.
Its more implied in this thread than stated matter of factly. This thread is several months old, and I know your question has been asked countless times in many different threads, much more recently than in this one.
I suggest you read the stickies in each section. Just by doing that you will find all firmware and modems and more. You will also find that the answer is no, you cannot downgrade your full firmware from 4.3. And you never will be able to.
If your having problems I suggest flashing the latest 4.3 build via Odin, then factory resetting. Start over clean with minimal restoring of backups (only the essentials).
Every time an update comes out there are people who have problems. The majority are solved by doing what I just said because most bugs are caused by using old data created by old apps on the new build.
Even if you could downgrade, chances are youd run into even more issues and still have to factory reset.
Sent from my SGH-T999 using Tapatalk
DocHoliday77 said:
... You will also find that the answer is no, you cannot downgrade your full firmware from 4.3. And you never will be able to.
Click to expand...
Click to collapse
thanks but I read online and some youtube videos showing that people have gone from 4.3 back to 4.1.2, just trying to make the phone the way it was before any updates were done and wondering if anyone knows the proper steps without bricking the phone.
They probably just flashed a rom. It is simply not possible to downgrade the firmware though.
Sent from my SGH-T999 using Tapatalk
so i found this post: http://forum.xda-developers.com/showpost.php?p=48758977&postcount=1412 and i have the same case as Christopher4tw with a stock 4.3 T999UVUEMJC and just want to get back to T999UVDMD5 so its running the 4.1.2 version of android
so do i just download the below file, extract and flash via odin then do a wipe via recovery? If not can you please explain how to go about this so i can have 4.1.2 running on the phone
April 2013 - 4.1.2 JellyBean
Note: This is based off of the stock image TMO T999UVDMD5
Perm Mirror: Download - root66_TMO_T999UVDMD5.7z
You cannot downgrade your firmware.
Flash an older rom with cwm or twrp if you need to be running md5
Sent from my SGH-T999 using Tapatalk
DocHoliday77 said:
You cannot downgrade your firmware.
Flash an older rom with cwm or twrp if you need to be running md5
Sent from my SGH-T999 using Tapatalk
Click to expand...
Click to collapse
so can I use this http://forum.xda-developers.com/showthread.php?t=2276645 and flash via cwm or twrp recovery and it will make the phone run 4.1.2 without bricking or having issues with knox or does that have the bootloader issue with it as well?
Yes, that one you can flash.
Sent from my SGH-T999 using Tapatalk
DocHoliday77 said:
Yes, that one you can flash.
Sent from my SGH-T999 using Tapatalk
Click to expand...
Click to collapse
great thanks so much for your help, can I flash the recovery via odin mobile app or is it safer to do it via pc?
Safer via PC.
It is possible via Mobile Odin. But that's one of the partitions I don't want to mess with when Phone is Booted/
If you know how to use Mobile Odin then it should be fine. I agree that its better to use pc odin if youre not familiar with Mobile Odin. However, it actually doesnt flash the recovery while booted. It flashes the flash kernel which is MO's temp recovery. It then boots to this and flashes. (So, perseus is right in that regard. But I personally love Mobile Odin and find it extremely useful and consider it safe unless you are brand new to all of this).
In fact Mobile Odin is another way you can flash 4.1.2. Itll flash the firmware, but only the system, kernel, recovery and modem. (I didnt bring this up previously because I didnt want to confuse, or go too far too fast).
If youre thinking about flashing recovery via MO, though, you can also instead just flash the rom you found. No need to flash the recovery unless you just want to. Put the rom in the update.zip slot and itll flash just fine.
If any of this is confusing, just stick with the original plan for now. The rest will come easy if you dont rush things.
One more thing, while you can usually update stock without wiping, you may find you have to factory reset after downgrading as the old system was not built for using data created on a new version.
Sent from my SGH-T999 using Tapatalk
thanks for all the help.. had to do the wipe since it kept showing the samsung logo but after that it booted just fine.
t999L
I have tried so many times to downgrade to 4.1.2 using odin but I havent be able to. I always get an error message

Hello. I need the MK4 Bootloader and I have searched. Only find a full restore method

I am looking to update my bootloader to the 4.3 Bootloader, but it seems there is no firmware-only zip/tar. I have found of course the one-click full restore which brings you to all the newest firmware bits, but this wipes your internal storage, and do not want to do a copy+paste + copy back. Could anyone point me to a firmware-only update to MK4? Or at least just the MK4 bootloader, as all else is updated.
Lol the internal storage copy wasnt as long as expected . Just doing the one-click now. Thanks anyway [email protected]
Yeah so far there is not a firmware only upgrade. Most likely won't be one since most don't want any kind of Knox on their phone.
Sent from my SPH-L900 using XDA Premium 4 mobile app
jlmancuso said:
Yeah so far there is not a firmware only upgrade. Most likely won't be one since most don't want any kind of Knox on their phone.
Sent from my SPH-L900 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Oddly enough, after doing the odin 1 click. It did not erase my internal... It boot up, my background was the same, apps were still there (didnt sign in to Google cuz it was still signed in), checked settings and everything is MK4, and Odin log shows all Success, no failures, 100% pass. Lel?
I noticed the other Note 2 variants have flashable 4.3 bootloaders without Knox..wonder why L900 users got left out
Huh? Which phones got 4.3 bootloaders without KNOX? I thought for SURE that every 4.3 bootloader contains KNOX and no one's figured out how to strip it out?
If anyone wants the 4.3 bootloader WITH KNOX (AGAIN...WITH WITH WITH KNOX, NOT WITHOUT) I'll strip it out of the MK4 tarball, package it up and host it tomorrow.
Sent from my SPH-L900. Please hit the thanks button if I helped you out!
EDIT: Here it is: https://www.mediafire.com/?advn74f40k25cjx I'm pretty sure the bootloader only contains sboot.bin and tz.img for the L900 on MK4. IIRC, boot.img is part of the application package, not the bootloader package (I may be wrong...?)
Every other Galaxy Note 2 except for the L900 has MK4 without knox. They're in the forums, just look
バカバカバカ!

[FIRMWARES]Official MDL / MK2 / NB4 / NH7 / NK2 [MEGA LINKS]

Stock .tar firmwares for Galaxy S4 M919/Jfltetmo
NK2 Android Version 4.4.4
HERE
NH7 Android Version 4.4.4
HERE
NB4 Android Version 4.4.2
HERE
MK2 Android Version 4.3
HERE
MDL Android Version 4.2.2
HERE
​
Just because other links from threads are so damn slow with a million pop ups and blah blah make me money with ads because you clicked my link.
mine for maybe other shiz
ShinySide said:
Stock .tar firmwares for Galaxy S4 M919/Jfltetmo
NB4 Android Version 4.4.2
HERE
MK2 Android Version 4.3
HERE
MDL Android Version 4.2.2
HERE
​
Click to expand...
Click to collapse
What's the source on these, and are they full firmwares (radio, modem, bootloader, etc.)?
Sent from my Galaxy S4 using XDA Free mobile app
OriginalGabriel said:
What's the source on these, and are they full firmwares (radio, modem, bootloader, etc.)?
Sent from my Galaxy S4 using XDA Free mobile app
Click to expand...
Click to collapse
Kies, Kies, sammobile
"Official" "Stock" = untouched
Sent from my SGH-M919 using XDA Premium 4 mobile app
I got a device that here SGH-M919 T-Mobile, rom 4.4.2, I would like to know if you like me reinstall the rom it because I exclude several applications by root explorer, if possible, what would be the step by step?
thanks for this @ShinySide
Corsariio said:
I got a device that here SGH-M919 T-Mobile, rom 4.4.2, I would like to know if you like me reinstall the rom it because I exclude several applications by root explorer, if possible, what would be the step by step?
Click to expand...
Click to collapse
Id like you to do whatever you want.
Download odin 3.07
Put phone in download mode
Connect to pc
Run odin (make sure repartition is NOT checked)
Click pda
Load tar
Click start
Wait til it reboots
Profit
Sent from my SGH-M919 using XDA Premium 4 mobile app
ShinySide said:
Id like you to do whatever you want.
Download odin 3.07
Put phone in download mode
Connect to pc
Run odin (make sure repartition is NOT checked)
Click pda
Load tar
Click start
Wait til it reboots
Profit
Sent from my SGH-M919 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
if i upgraded to NB4, is it possible to go back to MK2 or MDL via the same method with odin?
buntobo said:
if i upgraded to NB4, is it possible to go back to MK2 or MDL via the same method with odin?
Click to expand...
Click to collapse
no you can no longer downgrade and will have the knox bootloader which really isnt a big deal i dont know why everyone whines and cries about i if you trip your knox flag it does absolutely nothing except not allow you to lie to your carrierinsurance company with i dont know what happened i tried to turn my phone on and it wouldnt come onwhen you do something stupid like flash stuff for different devices
ShinySide said:
no you can no longer downgrade and will have the knox bootloader which really isnt a big deal i dont know why everyone whines and cries about i if you trip your knox flag it does absolutely nothing except not allow you to lie to your carrierinsurance company with i dont know what happened i tried to turn my phone on and it wouldnt come onwhen you do something stupid like flash stuff for different devices
Click to expand...
Click to collapse
i actually used shiamatsu's method of going from the MDL modem to the NB4 modem.
so i cannot revert back to the MDL modem even if i were to flash the MDL modem via odin?
i cannot revert back to older modems via odin if i were to say flash an international modem like the XXUFNB8 or XXUFNB9 modem for the I9505?
can i flash those international modems on my t-mo s 4 to fix wifi issues i'm having?
buntobo said:
i actually used shiamatsu's method of going from the MDL modem to the NB4 modem.
so i cannot revert back to the MDL modem even if i were to flash the MDL modem via odin?
i cannot revert back to older modems via odin if i were to say flash an international modem like the XXUFNB8 or XXUFNB9 modem for the I9505?
can i flash those international modems on my t-mo s 4 to fix wifi issues i'm having?
Click to expand...
Click to collapse
Modems you can. But thats not whats posted. If you flash full nb4 firmware with its bootloader. You can not downgrade.
i9505 modems you can't flash. They'll be rejected and fail. Ive actually forced them to flash and lost all service.
Sent from my SGH-M919 using XDA Premium 4 mobile app
ShinySide said:
Modems you can. But thats not whats posted. If you flash full nb4 firmware with its bootloader. You can not downgrade.
i9505 modems you can't flash. They'll be rejected and fail. Ive actually forced them to flash and lost all service.
Sent from my SGH-M919 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I flashed the C-Rom found in one of the threads on this forum for the t-mo s 4.
However, my wifi is now wonky and it doesn't log into or accept my wifi login details or allow me to connect to wifi
so i was thinking since it is an international rom, i might try to flash an international modem to try and fix the wi fi issue.
buntobo said:
I flashed the C-Rom found in one of the threads on this forum for the t-mo s 4.
However, my wifi is now wonky and it doesn't log into or accept my wifi login details or allow me to connect to wifi
so i was thinking since it is an international rom, i might try to flash an international modem to try and fix the wi fi issue.
Click to expand...
Click to collapse
C rom is a universal not just i9505 so modems wouldn't matter
Sent from my SGH-M919 using XDA Premium 4 mobile app
ShinySide said:
Id like you to do whatever you want.
Download odin 3.07
Put phone in download mode
Connect to pc
Run odin (make sure repartition is NOT checked)
Click pda
Load tar
Click start
Wait til it reboots
Profit
Sent from my SGH-M919 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Thanks, excellent!!:good:
I have this thread bookmarked on my computer, but I'm lijrc5 miles away right getting firewood and I gave a question. My s4 is running 4.3, would I screw it up if I flashed one of those 4.4s on it? It IS rooted, fully, not just the jf root process, and I'm running evil rom v10.
Sent from my SGH-M919 using XDA Free mobile app
wolfen1086 said:
I have this thread bookmarked on my computer, but I'm lijrc5 miles away right getting firewood and I gave a question. My s4 is running 4.3, would I screw it up if I flashed one of those 4.4s on it? It IS rooted, fully, not just the jf root process, and I'm running evil rom v10.
Sent from my SGH-M919 using XDA Free mobile app
Click to expand...
Click to collapse
Na not at all. Doesn't matter what you're running, will erase all of whatever rom youre running and install the firmware. Recovery, roms, kernels, etc dont matter at all. You may have to wipe data and cache in recovery after you flash it for it to boot tho which is common no matter what you're running.
Sent from my SGH-M919 using XDA Premium 4 mobile app
ShinySide said:
Na not at all. Doesn't matter what you're running, will erase all of whatever rom youre running and install the firmware. Recovery, roms, kernels, etc dont matter at all. You may have to wipe data and cache in recovery after you flash it for it to boot tho which is common no matter what you're running.
Sent from my SGH-M919 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
THANK YOU, I really dont; care what it wipes, even if it goes all the way back to pure stock thats fine, I have everything backed up with titanium, and all my apks are on my phone too.
I think I'll download eth latest and grestest firmware and see what it looks like
If I don't liek it I can alwasy reflash 4.3 which is already on the computer in carse I crashed something and/or bricked a phone. LOL ( which I do every now and then)
---------- Post added at 10:52 AM ---------- Previous post was at 10:40 AM ----------
Oh one more question while I'm at 10% of downloading android 4.4.2, whats this MEGS site I'm downloading from? I read about it and it seems secure, is it worth my time to download on everything, and start useing?
I'm currently downloading the 4.4.2 nb4 version onto my phone, cause the internet was turned off today until we pay the late fee. However that I'd only s minor inconvience sincrvyhtottled T mobile I'd as fast around here as internrt. I'll dimply transfer it f4om phone to computer as soon as its done
Sent from my SGH-M919 using XDA Free mobile app
ShinySide said:
no you can no longer downgrade and will have the knox bootloader which really isnt a big deal i dont know why everyone whines and cries about i if you trip your knox flag it does absolutely nothing except not allow you to lie to your carrierinsurance company with i dont know what happened i tried to turn my phone on and it wouldnt come onwhen you do something stupid like flash stuff for different devices
Click to expand...
Click to collapse
About the know counter, my first s4 with TMobile got broke and replaced, and they didn't even bother checking the counter, when I first went with T Mobile even asked, they said if I rooted the phone it voided the software warranty and the phones software was my responsibility..........uh..........OK... I can live with that, especially when it means I have full control and my choice of roms and apps
Sent from my SGH-M919 using XDA Free mobile app

updating bootloader and modem

i have att s3 i747. under baseband it says i747ucdlk3.
I want to install and experience with more roms, especially the lollipop nightlies. but they require an updated bootloader! Otherwise, my phone doesnt read the sim card. i have read so many threads on how to update the bootloader and modem/firmware, but half of the threads i read result in many people bricking their device! How do i update the bootloader properly? that is, without bricking my phone of course! should i do incremental updates? or jump from lk3 to the latest one? im lost on what to do, like i said so many people got bricked. can anyone help me out? it would be greatly appreciated!
i used this to get to NE4 with no problems.
http://forum.xda-developers.com/showthread.php?t=2789917
always , read read read. make a backup. good luck.
"all i can really do , is stay out of my own way and let the will of heaven be done"
mrrocketdog said:
i used this to get to NE4 with no problems.
http://forum.xda-developers.com/showthread.php?t=2789917
always , read read read. make a backup. good luck.
"all i can really do , is stay out of my own way and let the will of heaven be done"
Click to expand...
Click to collapse
Thanks I'll read up on it right now. I agree, I always read on forums first, which is why I found so many posts about how people had bricked their phones.
One question: did u use this to update from lk3?
Sent from my SAMSUNG-SGH-I747 using XDA Free mobile app
Is your phone sim unlocked? If it isn't, you could flash back to a stock AT&T 4.1.1 ROM, unlock, and run OTA updates until your have the latest ROM on your phone. This approach requires more time but it is the simplest and least risky in my opinion.
So basically you're saying to flash back to unrooted stock. And then keep using att updates until I get to the latest one, and then I should be on ne4 automatically?? Not sure if I'm understanding this correctly.
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Yes, flash back to stock and keep running ota until you hit the latest release.
If you have warranty left on your phone, updating, rooting, and loading a custom recovery will change the warranty bit from 0 to 1 which voids the remaining warranty.
audit13 said:
Yes, flash back to stock and keep running ota until you hit the latest release.
If you have warranty left on your phone, updating, rooting, and loading a custom recovery will change the warranty bit from 0 to 1 which voids the remaining warranty.
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K will do when chance the chance. Btw. Isn't there a requirement to not go past a certain firmware if I wanted to revert back to stock or else it'll brick? I thought it was if I go past 4.3. Any ideas?
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You will have no choice but to flash to 4.4.2 bootloader and modem if you want to run the latest d2lte ROMs.
True, once you are on 4.3 or higher bootloader, you cannot go back to stock 4.1.1.
audit13 said:
You will have no choice but to flash to 4.4.2 bootloader and modem if you want to run the latest d2lte ROMs.
True, once you are on 4.3 or higher bootloader, you cannot go back to stock 4.1.1.
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Isn't the 4.1.1 bootloader lk3? Cuz for some reason I'm on a 4.4.4 ROM with a baseband that ends in lk3....does that mean anything?
Sorry guys I'm clueless when it comes to modems and bootloaders and all that stuff. Thanks for these replies btw.
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Are you running a custom rom?
audit13 said:
Are you running a custom rom?
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Yes. CROM
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Some kk roms will run on a 4.1.1 bootloader while others will not. I know some of the newer cm11 roms will work but you will not have any signal with older modems and bootloaders.
audit13 said:
Some kk roms will run on a 4.1.1 bootloader while others will not. I know some of the newer cm11 roms will work but you will not have any signal with older modems and bootloaders.
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i had read of some people have to use ktoonz kernel to get wifi , but that is usually in the OP.
thank you once again @audit13 for coming to the rescue. i am now M8 and losing what little i747 now-how i had. lmao.
"all i can really do , is stay out of my own way and let the will of heaven be done"
So since I'm on lk3.. I should still be able to flash black to 4.1.1 stock via Odin and then use the ota right? Or should I flash back to 4.3. Which one is the safe option? Im thinking about using the ota option mentioned earlier in this thread.
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