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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.
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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
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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.
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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??
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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.
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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
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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
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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'm new to this forum although I've been following most of the threads. I have a Galaxy S3 by AT&T, unlocked and running stock 4.1.1 before I decided to flash to CM. Didn't like a few things about CM so I tried to Odin back to stock 4.1.1. Got to pass quite alright but the phone wont boot back up and now seems bricked. I've read about problems others have had with bricking trying to downgrade from stock 4.3 to other earlier versions on this particular phone model. I, however, thought this was a problem with stock rom only and CM had taken care of the dreaded knox and secure bootloader?
How do I fix this brick and get the phone back up and running? I'd greatly appreciate the steps laid out in plain English a newbie would be able to comprehend easily enough. Thanks
Did you go into recovery and do a factory reset?
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
shortydoggg said:
Did you go into recovery and do a factory reset?
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
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Thanks very much! Just did that and it worked.
Update
shortydoggg said:
Did you go into recovery and do a factory reset?
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
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Just wondering then if it's possible to switch to CM or any knox-free custom rom from stock 4.3 on the AT&T Galaxy S3? If so, it would seem to be a convenient workaround to the problems users have expressed trying to downgrade from 4.3 to 4.1.1 in order to free unlock their phones. I mean .. first install a custom rom and then odin back to stock 4.1.1 to unlock and, thereafter, upgrade either back to stock or a preferred custom rom? Would this be possible?
You can't downgrade from the stock 4.3 bootloader to an older bootloader. Trying to flash an older bootloader will brick the phone.
You need to be on stock 4.1.1 in order to use the free unlock method. A custom 4.1.1-based ROM will not have the required menu options.
audit13 said:
You can't downgrade from the stock 4.3 bootloader to an older bootloader. Trying to flash an older bootloader will brick the phone.
You need to be on stock 4.1.1 in order to use the free unlock method. A custom 4.1.1-based ROM will not have the required menu options.
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Thanks. Maybe I didn't phrase my question properly ... I mean is it possible to go to from stock 4.3 to a custom ROM based on 4.3 (or newer) e.g. CM11? I understand you can't downgrade from stock 4.3 to an older bootloader which is why I'm asking if a workaround involving stock 4.3 to custom 4.3 based and then back to stock 4.1.1 is possible? I don't know if anyone has been able to successfully flash custom 4.3 based to the AT&T version of the GS3 running stock 4.3.
Larry2999 said:
Thanks. Maybe I didn't phrase my question properly ... I mean is it possible to go to from stock 4.3 to a custom ROM based on 4.3 (or newer) e.g. CM11? I understand you can't downgrade from stock 4.3 to an older bootloader which is why I'm asking if a workaround involving stock 4.3 to custom 4.3 based and then back to stock 4.1.1 is possible? I don't know if anyone has been able to successfully flash custom 4.3 based to the AT&T version of the GS3 running stock 4.3.
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You should be able to flash anything as long as its listed as a bootloader. I believe only kit kat ROMs have vleumk5 as a boot installer
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
hey guys have been out of the modding life for a long time now since HTC Amaze came out on market and ive had nexus' (galaxy nexus) since then. i had a quick question. my sister passed down to me a S3 T-Mobile one. its on 4.1.1 and i had at the time put in CWM long time ago as i was gonna flash custom roms but never got around to it (i did this with the help of a youtube video.) now i have this device the Volume UP button doesnt work which is essential to go into download mode... how would i go about updating this to the latest 4.3 Firmware? if there are any detailed steps id really appreciate them. Sorry i know it sucks to get noob posts like these but i have done a bit of research and i cant seem to ask the right questions on google! thanks
btw just for though im switching from nexus 4 to s3 just cause i dont need the power from the n4 and i just want the s3 screen
so i think i found the piece i think its here: http://www.ebay.ca/itm/T-Mobile-Gal...cement_Parts_Tools&hash=item4d14d4fdbd&_uhb=1
is there a demo on how to do it or should i take it to Pacific Mall and get someone to do it? how much would it cost anyways?
You only need volume up to enter recovery.. volume down is for download mode.. anyway there are apps that can get you to download or recovery mode as long as you are rooted.. you could do that meanwhile or just wait till you fix the button.. really all you have to do is flash a 4.3 rom and modem in recovery, no need to update the whole firmware
Sent from my SGH-M919 using Tapatalk
Being on 4.1.1, itd probably be a good idea to update the firmware. Thats just my opinion though.
You can root without volume up working, and or flash roms like serio said.
As for fixing it though, if you are good working on electronics and have good manual dexterity, you could probably do this yourself. But the advantage of taking it to a shop is if they screw it up theyd probably have to replace or reimburse you for it.
Sent from my SGH-T999 using Tapatalk
what if i want to flash cyanogenmod11? is there any step by step? i dont want to brick this phone
do i have to update baseband?
First thing is to get rooted. Easiest way is to flash the root66 firmware via odin. Now decide if you want to use cwm/twrp recovery, or Mobile Odin to flash your rom.
If you want to use recovery, use goo manager or rom manager from the store to install the recovery. Then from the app choose reboot recovery and flash your rom. Factory reset after and reboot. Thats it.
You may need to update your firmware to at least 4.1.2. I think cm had issues running on older firmware.
Sent from my SGH-T999 using Tapatalk
isnt cm going to be 4.4.2? hwo do i update ? im fully rooted and running CWM 6.0.4.5 Touch ^^ dont know about TWRP but ive been using CWM for the longest time before so i trust it
If you want to skip updating firmware, just flash the rom from cwm. If it errors out youll need to update to at least 4.1.2 (official or root66) via Odin.
Sent from my SGH-T999 using Tapatalk
DocHoliday77 said:
If you want to skip updating firmware, just flash the rom from cwm. If it errors out youll need to update to at least 4.1.2 (official or root66) via Odin.
Sent from my SGH-T999 using Tapatalk
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OK i dont understand this part how would i flash 4.1.2? via CWM???
also Lets say i want to go on the official one 4.3 of Samsung ROM
such as this rom Stock Mod Rom
what do i have to do to get that on my 4.1.1 phone ur kind of scaring me but thanks for all the help!
ed116 said:
OK i dont understand this part how would i flash 4.1.2? via CWM???
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Click to collapse
for official or root66 you use Odin or mobile Odin, not cwm
ed116 said:
also Lets say i want to go on the official one 4.3 of Samsung ROM
such as this rom Stock Mod Rom
what do i have to do to get that on my 4.1.1 phone ur kind of scaring me but thanks for all the help!
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Click to collapse
flash the ROM and the 4.3 modem, as well as a custom kernel or at&t stock kernel modified by DocHoliday77 to get WiFi working
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ed116 said:
OK i dont understand this part how would i flash 4.1.2? via CWM???
also Lets say i want to go on the official one 4.3 of Samsung ROM
such as this rom Stock Mod Rom
what do i have to do to get that on my 4.1.1 phone ur kind of scaring me but thanks for all the help!
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Click to collapse
Go to the firmware thread stickies in development (and linked in my Sig). Download the 4.1.2 firmware (or 4.3 if you choose, up to you), and flash using PC Odin.
Mobile Odin, while awesome in its own right, cannot update your boot loader and other important parts of the firmware needed by CM.
serio22 said:
for official or root66 you use Odin or mobile Odin, not cwm
flash the ROM and the 4.3 modem, as well as a custom kernel or at&t stock kernel modified by DocHoliday77 to get WiFi working
Sent from my SGH-M919 using Tapatalk
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Or am I remembering wrong? Wasn't there issues with running newer CM roms on pre 4.1.2 firmware? Isn't that what started everyone using the boot loader asserts in their scripts?
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DocHoliday77 said:
Or am I remembering wrong? Wasn't there issues with running newer CM roms on pre 4.1.2 firmware? Isn't that what started everyone using the boot loader asserts in their scripts?
Sent from my SGH-T999 using Tapatalk
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I think it was just pre JB but I'm not sure.. If that's the case then flashing 4.1.2 firmware is a safer bet
Sent from my SGH-M919 using Tapatalk
wow this is super confusign ahahha sorry guys !
so can i do this
go to download mode and flash root66 4.3 JB thats pre rooted with Odin Software and if later i wantt o isntall a custom rom i just install CWM recovery and can install CM 11 by just flashing the zip file?
ed116 said:
wow this is super confusign ahahha sorry guys !
so can i do this
go to download mode and flash root66 4.3 JB thats pre rooted with Odin Software and if later i wantt o isntall a custom rom i just install CWM recovery and can install CM 11 by just flashing the zip file?
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Yes, as long as you don't care about the knox counter being tripped
Sent from my SGH-M919 using Tapatalk
serio22 said:
Yes, as long as you don't care about the knox counter being tripped
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does this do anything bad?
reading a bit online its about warranty im sure since this device is two generations old it would nto even matter!
ed116 said:
does this do anything bad?
reading a bit online its about warranty im sure since this device is two generations old it would nto even matter!
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If you didn't buy it from T-Mobile then it doesn't matter
Edit: just re-read the OP, and yeah it won't matter
Sent from my SGH-M919 using Tapatalk
thank you all! yeah its T-Mobile phone used in Canada (Wind Mobile) thought maybe knox was like more prone to bricking or something this phone is almost 2 years old
ed116 said:
thank you all! yeah its T-Mobile phone used in Canada (Wind Mobile) thought maybe knox was like more prone to bricking or something this phone is almost 2 years old
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As long as you don't try to flash older firmware or bootloader then Knox is really no big deal.. You can still root, flash custom recoveries and ROMs with it
Sent from my SGH-M919 using Tapatalk
Up on 4.3! mega thanks guys! looks very nice love TW!
Hi All,
I'm pretty new at this, so I hope I'm asking in the right place.
I'm waiting for the US KitKat update to come out via SamMobile, but I'm wondering if I need to update my bootloader at the same time that I flash the update?
I've read on this (Samsung Galaxy Note 8) Forum that some people where experiencing broken wifi when they updated with the UK KitKat version, and some were speculating that this could be because the bootloader in their device isn't compatible with KitKat?
I kinda wish I wouldn't have rooted and gone down this rabbit hole, but I figured that this would be the best way to get updates, also I really wanted to uninstall bloatware.
Thank you for taking the time to answer my question!
The official update should automatically update the bootloader, you can easily flash a full stock image and you should be good if that's the route you want to take.
Sent from my SAMSUNG-SGH-I337 using Tapatalk
msd24200 said:
The official update should automatically update the bootloader, you can easily flash a full stock image and you should be good if that's the route you want to take.
Sent from my SAMSUNG-SGH-I337 using Tapatalk
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Thank you very much! That completely answers my question.
You are welcome, furthermore you can go here to get the full factory 4.1 image to flash http://forum.xda-developers.com/showthread.php?p=41683517
[ROM]6/23/2013StockFACTORY IMAGE FOR N5110; N5110MD1,N5110UEEMF1,UEEMF2 FULL FIRMWARE
These are links to factory images that I have pulled from different sources and have posted here for you guys to use to to restore your tablets to factory out of the box status they all work. Personal......
Sent from my SAMSUNG-SGH-I337 using Tapatalk
Hello,
if I upgrade the bootloader for KitKat, is it still posible to flash other roms like cm11?
Thank you for enlighten me
Grobie13 said:
Hello,
if I upgrade the bootloader for KitKat, is it still posible to flash other roms like cm11?
Thank you for enlighten me
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Click to collapse
I would assume so, since CM11 is based on KitKat.
However, you may want to get a second opinion from someone with more knowledge than myself.
Yes you would be able to install CM11 as well as 4.2.2 version ROMS.
Sent from my SGH-I317 using Tapatalk
Hi All,
I have S3 T999v – Wind variant running on stock 4.4.2 , overall I hate this kitkat experience...
My issue is whenever I try to flash custom recovery TWRP (2.7.1.0 or older), it installs but when I try to take backup it shows nothing to take backup of (no System , no EFS etc....). When I try rebooting it gives error “NO OS Found” I am able to proceed anyways and it starts up phone fine.
Can anyone tell me what could be the issue here??? I wanna downgarde to either stock 4.3 or to install custom liquid smooth 4.4.4. but would prefer to take a back up just in case.
BTW my phone is rooted , rooted it with towel root.
Also can I flash T999 (t-mobile) based recoveries onto my T999v ?
Would appreciate your help :good:.
Thanks
I recommend using d2tmo recoveries over d2can. More roms will be flashable. And you can use any rom here in our forums.
For now, try using either cwm or philz recovery. Youre experiencing a known issue that I believe is related to the hardware revision. I keep hoping to attempt a fix, but just havent had time yet. But for now, one of the other recoveries should work for you.
Sent from my SGH-T999 using Tapatalk
DocHoliday77 said:
I recommend using d2tmo recoveries over d2can. More roms will be flashable. And you can use any rom here in our forums.
For now, try using either cwm or philz recovery. Youre experiencing a known issue that I believe is related to the hardware revision. I keep hoping to attempt a fix, but just havent had time yet. But for now, one of the other recoveries should work for you.
Sent from my SGH-T999 using Tapatalk
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Thanks Doc,
I will give it a try, but if there is a way to downgardde to 4.3 stock? Tried odin it with sam mobile firmware, its crashing
sam33r said:
but if there is a way to downgardde to 4.3 stock? Tried odin it with sam mobile firmware, its crashing
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Click to collapse
No, you cannot downgrade firmware. Just try what doc said
serio22 said:
No, you cannot downgrade firmware. Just try what doc said
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Click to collapse
Thanks buddy, yup CWM worked :good:
but why cant we downgrade to 4.3, i though it was that one cannot downgrade lower than 4.3 i.e. 4.2. in not possible now!
Knox. They prevent any downgrading to protect against tampering with Knox secure containers. You can't downgrade anymore, period. Anything beyond 4.3 or with Knox will be this way from now on.
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Yeah just like doc said, if you're on 4.3 firmware you can't downgrade firmware to 4.1.2, or if you're on 4.4.2 you can't downgrade to 4.3 or 4.1.2.. Anything lower than your current firmware is a no.. You can only flash equal or newer firmware