I have a Samsung S3 AT&T version, SGH-i747. The phone is rooted and I have the ROM backed up using CWM.
Can I flash this phone with the stock T-Mobile ROM version without any issues (I believe it is T999?).
My goal is to get wifi calling which doesn't come with the ATT model and from what I've read, if I can install the T-Mobile stock ROM or a custom version of it, it will come the wifi calling capability.
Thanks
Hi,
According to my experience, I would say NO.
But you can try it. And if it doent work, revert back to your ROM
By the way I am using custom ROM too on ATT phone.
It may be a matter of semantics, but do not install the stock T-mobile rom. Stock implies you will also be flashing the bootloader and modem. Installing the T999 bootloader and modem on the i747 will brick it. Anything from Sammobile would flash bootloader and modem.
Now, I have seen a number of CM, AOSP, and custom TouchWiz (based on Stock Samsung) ROMs for the i747 that will run on the T999. I would think the reverse would hold true, the T999 ROMs running on the i747. AS LONG AS they do not flash bootloader and modem. BE ADVISED, I have not searched the T999 threads to verify this conjecture. Some doubt enters my mind as I recall that T999 ROMs support AWS while i747 ROMs do not, this may break running them on the i747.
The T999 roms should run fine for the most part. It's safe to flash one to try, just DO NOT flash the firmware as mentioned above.
As for WiFi calling, don't get your hopes up. If I'm not mistaken it's tied into the modem (part of the firmware you cannot flash). So unless you have a T999, WiFi calling won't work.
Sent from my SGH-T999 using Tapatalk
Related
I unlock both my Koodo SGH-I747M by following the instructions (just by punching a bunch of codes) from one of those YT video and I've been using T-Mobile's prepaid service since.
http://forum.xda-developers.com/galaxy-s3/general/american-canadian-sgs3-read-flashing-t1757755
Since the specs are all the same for SGH-I747M (AT&T/Telus/Bells/Koodo/Rogers) + my phones are unlock, does that mean I can flash both my phones with Kit-Kat (once released) by any of these carriers (AT&T/Telus/Bells/Koodo/Rogers)?
Thanks.
p/s currently still on the original 4.1.1
I would not do it as att and koodo use different bootloaders and modems.
audit13 said:
I would not do it as att and koodo use different bootloaders and modems.
Click to expand...
Click to collapse
Glad I asked first, thanks for the reply and it makes sense :good:.
Personally, I would avoid knox as most custom KK ROMs will work fine with the 4.1.2 bootloader. I would only upgrade the bootloader if it was required for a ROM I really wanted to use.
Your unlock means nothing to the ability to install a ROM or not.
Now, you can install the Samsung ported Sprint Kitkat ROM for AT&T if you update your bootloader and modem to the MK5 version and never use ODIN or try to downgrade your bootloader ever again ! This ROM will not work without the MK5 bootloader and modem. If you proceed that way, your warranty will be void
Also, you can always flash Koodo builds
If you wish to keep your current bootloader, you can always install any of the non samsung ROMs, but some will require that you have the MF1 bootloader at the least (CM for example).
WARNING!!!!
Do not flash a 4.4.2 modem if you are running 4.3 firmware (bootloaders)!!!!
This will cause a permanent hard-brick!!! There is no fix!!!
The only reason anyone should need to flash one of these is if they had flashed a 4.3 or earlier modem for whatever reason. Once updated to 4.4.2 firmware, ONLY that matching modem will work. Flashing anything else will result in no signal and most likely an "Unknown" baseband and IMEI. If you flashed an older modem, you will need to flash back to the 4.4.2 one and these will all come back.
This has happened a number of times already, and continues to happen still. So I figured I would put them in a separate thread to make them easier to find.
Flash from the recovery of your choice, or Mobile Odin. The updater-script for these includes an assert that should prevent flashing on anything that does not have the correct bootloader.
Full Disclosure: I do not have an I747 or I747M, and as such, I am unable to test any of these. I have full confidence they will work as expected though. (I have been doing the modems for the T999 for a couple of years now). Still, you should know they are currently untested.
DOWNLOADS
AT&T
I747 UCUFNE4
Bell
I747M VLUFNH2
I747M VLUFNE6
Fido
I747M VLUFNF2
Koodoo
I747M VLUFNH2
I747M VLUFNE6
Rogers
I747M VLUFNF2
Telus
I747M VLUFNH2
I747M VLUFNE6
Sasktel
I747M VLUFNH2
I hope this helps! If you do happen to flash one of these, please post back whether or not it worked. Just for confirmation.
Doc
Reserved
Just In Case
4.4.4
Will this work if I am running 4.4.4 SLIMKAT?
VancouverGreek said:
Will this work if I am running 4.4.4 SLIMKAT?
Click to expand...
Click to collapse
These modems will only work if you have updated to the latest 4.4.2 base firmware and bootloaders. The ROM you are running is irrelevant. If everything is currently working, you have no need for these.
I need this files to repair Unknow baseband and IMEI null in my I747M VLUFNE6 4.4.2
Another link please.. this link dont work..
when i try to unlock the phone with NSPro, Unknow baseband and IMEI null in my I747M VLUFNE6 4.4.2.. i nedd moden firmware of my version but i can´t donload..
BR
Which one? There are 3 NE6 modems posted. (Any would probably work seeing as they appear to be identical)
And did you try any of the afh mirrors?
OP Updated!!!
OP Updated!
As requested, I have added the latest I747M, NH2 modems for the Canadian carriers that received this update.
Hello Doc, I have an issue trying to upload the modem on my sgh i747 because when I downloaded the CWM modem gives me Error 7 and dont let me upload the modem actually I have I747UCUEMJB and 4.4.4 slimkat, but my bigger problem is the imei, baseband null. helpme please all the night I wastryng many solutions and I am so tired now.. thanks
You probably never updated your firmware to 4.4.2.
To know for sure open terminal emulator and enter this.
getprop ro.bootloader
If it says MJB, you haven't updated your firmware yet and flashing this modem would permanently break your phone. If it is MJB, flash the same firmware via Odin and factory reset. That often fixes the imei problem. If it does not, pm me for further help with it. Can't post those instructions here.
Sent from my SAMSUNG-SGH-I747 using Tapatalk
Thanks for keeping the support for this phone going. I have the latest bootloader ..uemk5 for my Rogers sghI747m.
I tried to flash this and got a status 7.
I have been using the ..UEND3 Modem up till now.
You need to update first or this modem would permanently brick your device. MK5 is a 4.3 build. I think the latest Rogers is NF2. You cannot flash this modem unless you've already updated. And then you won't need this. I released these because some mistakenly flash the older 4.3 modems after updating and find it won't work, so they needed a way back.
Sent from my SAMSUNG-SGH-I747 using Tapatalk
Please make sure you guys read the whole OP
Sent from my SAMSUNG-SGH-I747 using Tapatalk
My mistake. I thought I was on the latest bootloader. I've just relied on the bootloader thread by dstruct that was linked to yours . Thx
Sent from my SGH-I747M using Tapatalk
No Cell data after root and new rom and recovery.
Hi,
This is a repost from the S3 help forum as the OP here seems very knowledgeable about modems and bootloaders. Excuse the redundancy.
I was given a used ATT I747 s3 which had stock 4.3 , modem/bootloader mjb, and knox. I rooted, removed knox and installed slim 4.4.4 rom, lean 4.4.4 kernel and latest philz recovery. All running ok
including cell calls to/from phone, mms, apps and wifi data. Same modem/bootloader (MJB), IMEI accurate after upgrade. However ATT cellular data will not connect and or transmit and/or receive using att, phone or lte APN.
Any help/thoughts appreciated?
Could be the rom. I've been hearing about a lot of connection issues on cm/aosp based roms lately. Try flashing back to stock to see if it works.
Sent from my SAMSUNG-SGH-I747 using Tapatalk
Nevermind I re read. Did it work before you installed lean kernel?
Sent from my SGH-I747M using XDA Free mobile app
In my upgrade process, the first thing I did, after the recovery had been updated to Philz, was install slim rom and lean kernel together and at the same time. That was when the problems began. They went away when I reinstalled slim rom only (without lean kernel). Everything now ok. Hope that helps.
I'll start by saying I'm very much a noob but read and read as much as I can and have been following quite closely a lot of the s3 development so anyone feel free to correct me if I'm wrong.
It seems in the past few months a lot has changed with kernels and compatibility has broken numerous times. If the dates of the releases of kernel and Rom aren't quite close then some commits in the rom could break data, wifi, etc. If your running the latest nightly Rom make sure your using a recent kernel. Always just make a backup before flashing custom kernel and then you can revert right back if the kernel breaks anything.
Hope that helps...
Sent from my SGH-I747M using XDA Free mobile app
Ive unrooted my phone via the super user app but I still have the Liquid Smooth ROM. From everything I read I was under the impression it would reboot completely stock
How do get it back to stock ROM!? I have been searching everywhere and nothing?
I want to get my OTA updates as I haven't used this phone since last year. I don't have access to a computer as NY charger bit the dust and I'm working the next 2 weeks in a remote location with no WiFi (I have data though)
Can any on help me, I'm slightly desperate as this Liquid Smooth ROM lags horrible, reboots if I try to use the front camera (in any app!) and is missing a lot of simple stock features like the messaging app lol,
Oy what have I done am I stuck with this or is there a way to reroot without a PC so I can flash a stock ROM?!
I'm assuming you have the i747 from AT&T.
Unrooting simply removes your administrator access to system files and apps that need root access to be fully functional, that's all.
What bootloader is on your phone? If the phone has a 4.1.2 bootloader or lower, the easiest way to get back to stock would be to flash a stock AT&T ROM from sammobile. com using Odin and I recommend living with the phone in its current state until your get access to a PC and charger.
If your bootloader is 4.3 or higher, you cannot flash a stock AT&T ROM using Odin because AT&T naver released a full ROM that can be flashed that way. You'll confirm your bootloader and follow the appropriate thread to get as close to stock as possible.
I keep mentioning the bootloader because flashing the wrong bootloader/modem combination could hard brick your phone.
audit13 said:
I'm assuming you have the i747 from AT&T.
Unrooting simply removes your administrator access to system files and apps that need root access to be fully functional, that's all.
What bootloader is on your phone? If the phone has a 4.1.2 bootloader or lower, the easiest way to get back to stock would be to flash a stock AT&T ROM from sammobile. com using Odin and I recommend living with the phone in its current state until your get access to a PC and charger.
If your bootloader is 4.3 or higher, you cannot flash a stock AT&T ROM using Odin because AT&T naver released a full ROM that can be flashed that way. You'll confirm your bootloader and follow the appropriate thread to get as close to stock as possible.
I keep mentioning the bootloader because flashing the wrong bootloader/modem combination could hard brick your phone.
Click to expand...
Click to collapse
I attached an image does that help as far as boot loader goes? I'm not sure how to check it. I have the I747M on virgin mobile Canada. Att ROMs have usually worked perfectly. So if my boot loader is compatible I can flash a stock ROM with Odin without rerooting?
Since you have an i747m, the safest and easiest way to restore to completely stock would be to wait until you can flash a stock 4.3 ROM via Odin. Do not attempt to flash anything older than 4.3.
Custom AT&T ROMs will work on your i747m but I don't recommend using stock AT&T ROMs on an i747m. Also, do not flash AT&T modems or bootloaders onto an i747m as this will probably brick your phone.
audit13 said:
Since you have an i747m, the safest and easiest way to restore to completely stock would be to wait until you can flash a stock 4.3 ROM via Odin. Do not attempt to flash anything older than 4.3.
Custom AT&T ROMs will work on your i747m but I don't recommend using stock AT&T ROMs on an i747m. Also, do not flash AT&T modems or bootloaders onto an i747m as this will probably brick your phone.
Click to expand...
Click to collapse
Okay that first part sounds simple enough for me.
But what would be a preferable stock ROM to flash if not ATT (assuming you say this because my phone is Virgin Mobile Canada) If I remember correctly I had flashed a ATT stock ROM a long time ago and ended up with no service and security issues that I eventually fixed but were a pain in the arse to figure out. I don't know if I've ever come across a Virgin Mobile ROM. I believe they are a sub company of Bell btw.
Go to sammobile.com and flash any mk5 firmware you want for the i747m. You can choose from Rogers, Bell, and Telus.
I have cross-flashed a Rogers ROM onto a Telus Phone and a Telus ROM onto a Bell phone.
Based on my own experience, all i747m ROMs for Canadian carriers appear to be the same except for carrier customisations.
audit13 said:
Go to sammobile.com and flash any mk5 firmware you want for the i747m. You can choose from Rogers, Bell, and Telus.
I have cross-flashed a Rogers ROM onto a Telus Phone and a Telus ROM onto a Bell phone.
Based on my own experience, all i747m ROMs for Canadian carriers appear to be the same except for carrier customisations.
Click to expand...
Click to collapse
Okay! Perfect this is a lot more straight forward than I anticipated, thank you SO much!!
When flashing the ROM with Odin, uncheck everything except f.reset time. When the flash is complete, you will see the word "reset" in the status window. When you see reset, remove the USB cable, remove the battery, replace the battery, boot into recovery, and wipe cache, data, Dalvik, and reboot.
Hi guys I need some information regarding to How to root, flash Custom ROMS, flash various Recoveries and if I want to revert back to full stock ROM whenever I want to how will I do it?
My device model is SGH-I747M (Rogers Carrier) and I've updated it to the latest OTA update 4.4 KitKat
I've seen may threads regarding to the SGH-I747 but all are for AT&T carrier but not any single for the Rogers carrier why?
Do you have any warranty left on your phone? Flashing a custom recovery will trip the warranty counter and change it from 0 to 1.
audit13 said:
Do you have any warranty left on your phone? Flashing a custom recovery will trip the warranty counter and change it from 0 to 1.
Click to expand...
Click to collapse
I haven't rooted/flashed nothing on my phone yet. All I'm just asking the question bro and yea I don't have any warranty for it
The easiest way to root, in my opinion, is to flash a custom recovery in Odin. After flashing a custom recovery, boot into recovery, flash supersu, boot the phone, allow supersu to update and disable knox. Then boot back into recovery, create a nandroid backup, and flash a custom ROM for the d2lte.
To flash back to stock, you can restore your nandroid backup or flash a stock ROM from sammobile.com. Just make sure to match the sammobile.com ROM with your bootloader.
The big difference between the i747 (AT&T) and the i747M (various Canadian carriers) is the bootloader and modem. They are NOT interchangeable between the i747 and the i747M. I haven't seen any of the custom ROMs for these SGS3s that flash bootloader and modem. Therefore any of the custom ROMS for the i747 will work with the i747M. Custom TouchWiz based ROMs are safe to use.
If the instructions for installing a ROM say that you must be on the NE4 or NJ1 bootloader and modem, the equivalent for the Rogers i747M are (NDx?), NF2, and NKx. From your original post I believe you are on the NKx bootloader and modem pair. This is good for any of the Kitkat and Lollipop ROMs. The only catch is that the updater-scripts for some of the older KK ROMs may not recognize the newest bootloader and modems. The ROMs are still good, it just takes a bit of work to get them installed. The same extra work would actually allow you to run a JellyBean (4.3) ROM.
Stock ROMs, those designed to return your device to factory condition (+/- root and +/- custom recovery), require much more care.
If you ever need to return to stock for your i747M, DO NOT flash a ROM that will down grade your modem and bootloader. Downgrading the bootloader and modem once you are at, or past, the 4.3.x versions will brick the i747 and I have read it will do the same for the i747M. If you can not find a stock ROM in the forums for the i747M you can find them at sammobile.com.
There are some stock ROMs available in the forums that include the AT&T bootloader and modem. DO NOT flash/install any of these.
There are stock ROMs for the i747 in the forum that do not contain bootloader and modem. These are safe for you, but BE CAREFUL. You do not want to mistakenly try to install one that does have the bootloader and modem
Also, do not flash a modem that does not match your bootloader in version number. This did not matter prior to the 4.3 bootloader and modem, it has ever since.
I have a AT&T i337 Samsung S4. It is rooted, and has a custom rom / Recovery. I want to give the phone to my son, I want to put a T-Mobile ROM on it. I want it to be as stock Samsung as possible for him. What all should I flash? ROM? Kernel? Modems?
This the latest stock rom available at the moment. Only thing is that it doesn't contain the stagefright fix, so you'll have to download a third party sms app for the fix.
http://forum.xda-developers.com/showthread.php?p=55374113
Flash the rom, nothing else should be needed. Just make sure you update your device's modem to the latest for i337
Oh and it's M919
Sent from my SM-G920T using Tapatalk
If the i337 has a locked bootloader, you may have issues trying to flash a non-AT&T ROM.