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I unlocked a Galaxy S4 SGH-I337 FROM ATT I am using Tmobile services.
My question is can I install a Stock ROM from TMobile instead of having the ATT one?
I like the Wifi Calling and Tethering option.
I can tell you... But I have a LOT of readers who want to know how to do what you have already done! How did you SIM unlock your SGH-I337? There is a published method for AT&T and TMo that seems to no longer work on the AT&T variant.
OK.. I won't hold you hostage, but I really would like to know!
For the flash to stock, just head over here http://forum.xda-developers.com/showthread.php?t=2267895
Follow the instructions and that will re-flash T-Mobile stock everything.
Sent from my SGH-M919 using Tapatalk
mhannigan said:
I can tell you... But I have a LOT of readers who want to know how to do what you have already done! How did you SIM unlock your SGH-I337? There is a published method for AT&T and TMo that seems to no longer work on the AT&T variant.
OK.. I won't hold you hostage, but I really would like to know!
For the flash to stock, just head over here http://forum.xda-developers.com/showthread.php?t=2267895
Follow the instructions and that will re-flash T-Mobile stock everything.
Sent from my SGH-M919 using Tapatalk
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Click to collapse
Are u sure u can directly odin flash tmo stock unto i337?
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
sharpeyedman said:
Are u sure u can directly odin flash tmo stock unto i337?
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
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Click to collapse
Yes. But also check this thread. The AT&T boot loader is locked and may require Loki Doki patch when you are done.
http://forum.xda-developers.com/showthread.php?t=2295557
Sent from my SGH-M919 using Tapatalk
mhannigan said:
Yes. But also check this thread. The AT&T boot loader is locked and may require Loki Doki patch when you are done.
http://forum.xda-developers.com/showthread.php?t=2295557
Sent from my SGH-M919 using Tapatalk
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Click to collapse
.... I may be wrong here, but since when has it been OK to Odin different carrier's stock .tars? Flashable CWM zips yes, but the bone stock tar with modem, baseband, etc?
Also, being that you have TMO service and an ATT device; flashing a TMO ROM with WiFi calling should work; just use an ATT kernel and the Loki patch. Personally, I'd flash the rooted stock MDL or a custom TouchWiz via CWM or whatever recovery you happen to use and not use Odin.
lordcheeto03 said:
.... I may be wrong here, but since when has it been OK to Odin different carrier's stock .tars? Flashable CWM zips yes, but the bone stock tar with modem, baseband, etc?
Also, being that you have TMO service and an ATT device; flashing a TMO ROM with WiFi calling should work; just use an ATT kernel and the Loki patch. Personally, I'd flash the rooted stock MDL or a custom TouchWiz via CWM or whatever recovery you happen to use and not use Odin.
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Click to collapse
Since wjenmisnit OK to do it differently?
It is only OK to do when you know what you are doing. In this case the hardware is absolutely identical. You're not going to be using AT&Ts baseband firmware on the T-Mobile network are you? Good luck with that.
Mike
Sent from my SGH-M919 using Tapatalk
---------- Post added at 12:24 AM ---------- Previous post was at 12:17 AM ----------
lordcheeto03 said:
.... I may be wrong here, but since when has it been OK to Odin different carrier's stock .tars? Flashable CWM zips yes, but the bone stock tar with modem, baseband, etc?
Also, being that you have TMO service and an ATT device; flashing a TMO ROM with WiFi calling should work; just use an ATT kernel and the Loki patch. Personally, I'd flash the rooted stock MDL or a custom TouchWiz via CWM or whatever recovery you happen to use and not use Odin.
Click to expand...
Click to collapse
MDL baseband is the modem firmware
Sent from my SGH-M919 using Tapatalk
i have the i337 ATT and I am using a Tmobile sim card. Just youtube "unlock galaxy s4 AT&T". There are plenty of videos that use a secret menu to unlock the phone.
Free and instant
I also have AT&T i337 unlocked BUT
I also have AT&T i337 unlocked BUT when I try to use it with MetroPCS (same tower as T-Mobile - companies now merged) I can't get anything but Edge network where on my MetroPCS-supplied phone I get 4G (LTE only rarely) in the same areas. Edge network is ridiculous - can't even load a standard webpage- forget about watching a video! ookla =0.01mps!
So I have an unusable rooted, unlocked S4.
I've tried various APN settings to no avail... Thought I would try liquidsmooth ROM, or any ROM that works on both AT&T and T-Mobile... I assume T-Mobile /MetroPCS would react the same. And I am on a pay as you go plan that is similar to T-Mobile's s. I could easily switch to them if not...
Questions:
Has anyone any advice that could help?
Does anyone know if T-Mobile requires a "pairing" of sim card with phone's IMEI as MetroPCS does? (big pain in the butt)
I've done the same thing flashed roms, Modems, To my luck nothing, I did filing that since I repaired the imei, That is when the problem started. Also to does not tie imei to sims. Did you repair imei
Sent from my SGH-M919 using xda premium
Easy free Sim unlock
Just wanted to point out that if you know someone who has AT&T service they can unlock your phone for free My girlfriend did it for me on their website and it took 24 hours for them to send an email with the unlock code. Just thought i should share that. Up next getting this t-mobile rom onto my 32gb i337 at 4.4.2 with NB1. I hate everything AT&T and God is this phone bloated!
Wanabedev83 said:
Just wanted to point out that if you know someone who has AT&T service they can unlock your phone for free My girlfriend did it for me on their website and it took 24 hours for them to send an email with the unlock code. Just thought i should share that. Up next getting this t-mobile rom onto my 32gb i337 at 4.4.2 with NB1. I hate everything AT&T and God is this phone bloated!
Click to expand...
Click to collapse
Don't they have to be the owner to request an unlock?
Sent from my SGH-M919 using Tapatalk
serio22 said:
Don't they have to be the owner to request an unlock?
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
To be honest i can't answer your question. The phone i bought was from a guy who sold it to me out of eBay with a none working screen, he had the imei in the pics so i ran an imei blacklist check and it was clean. I asked him why he didn't fix it and said it was out of warranty so he just left it dead. I guess it was paid for but in his account so it was free for anyone to use but letting my girl do the unlock request worked so if you have a phone that's not blacklisted and you its not associated to an active account I guess it could be done. Try it, it's worth the try.
Similar question
Very first post, not sure if I should have started a new thread. Anyway, I have an ATT S4 I337 with the MF3 baseband. It's rooted, region unlocked, and fully switched to t-mobile service using a method I found on youtube, which worked fairly well except had to modify two things (I can help if you're having trouble). Now I'd like to upgrade firmware (I'm still on 4.2.2). However, I have a lot of uncertainty because of all the changes I've made. If I temporarily unroot, who am I going to get updates from? Do I need TMO or ATT custom ROMs if I want custom (have they solved that bootloader issue yet?). Basically, what's the safest way to update firmware?
Thanks in advance
mhannigan said:
Since wjenmisnit OK to do it differently?
It is only OK to do when you know what you are doing. In this case the hardware is absolutely identical. You're not going to be using AT&Ts baseband firmware on the T-Mobile network are you? Good luck with that.
Mike
Sent from my SGH-M919 using Tapatalk
---------- Post added at 12:24 AM ---------- Previous post was at 12:17 AM ----------
MDL baseband is the modem firmware
Sent from my SGH-M919 using Tapatalk
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Click to collapse
The above also omits that if you are on Android 4.3.X than the bootloader on your Samsung Galaxy S4 contains a bootloader restriction preventing any downgrade which means you would be unable to flash MDL (ie. M919UVUAMDL) since MDL is Android 4.2.2.
Does anyone know a way around this bootloader restriction thereby allowing a downgrade to 4.2.2?
att i337 to t-mob stock
Hi, Im pretty new to this firmware and different model numbers etc.. but here goes. I bought a samsung s4 on att i337 a few months ago off a friend. I paid an online company for the unlock code and received the code within 24 hours. The phone is now unlocked and I have a T-mob sim in it, i'm now looking to update the firmware to t-mobile 4.4.4. Can i download a t-mob stock rom for i337?? I'm worried that this might break the phone as everything I see for t-mob is SGH-M919. Should this matter now that the phone is unlocked?? Thanks
No, you need to use ATT firmware due to hardware differences (antenna/radio). Also as I recall ATT S4s have a locked bootloader meaning only safestrap compatible ROMs can be used, unless something changed since I had one last summer. Sold it, on Swappa, and bought a TMob version with unlocked boot loader and sim unlocked!
Sent from my SGH-M919 using Tapatalk
mfranklin90 said:
Very first post, not sure if I should have started a new thread. Anyway, I have an ATT S4 I337 with the MF3 baseband. It's rooted, region unlocked, and fully switched to t-mobile service using a method I found on youtube, which worked fairly well except had to modify two things (I can help if you're having trouble). Now I'd like to upgrade firmware (I'm still on 4.2.2). However, I have a lot of uncertainty because of all the changes I've made. If I temporarily unroot, who am I going to get updates from? Do I need TMO or ATT custom ROMs if I want custom (have they solved that bootloader issue yet?). Basically, what's the safest way to update firmware?
Thanks in advance
Click to expand...
Click to collapse
Hi! I am having major issues with my s4 i337 after switching from att to tmobile. The phone was unlocked so I took it upon myself to unlock it. It is unlocked but sometimes or rather most of the time does not pick up the network. When it does have data connection, it is Edge. I flashed the NC1 to root my phone, then reflashed to NJ4 (to unlock) but now nothing works. No wifi, camera fails, no multitasker, no voice assistant. Please help!!!!! I don't know what to do. I should have never unrooted it to unlock. I should have paid the $35 to get an unlock code. Can I fix this?
vannicuhh said:
Hi! I am having major issues with my s4 i337 after switching from att to tmobile. The phone was unlocked so I took it upon myself to unlock it. It is unlocked but sometimes or rather most of the time does not pick up the network. When it does have data connection, it is Edge. I flashed the NC1 to root my phone, then reflashed to NJ4 (to unlock) but now nothing works. No wifi, camera fails, no multitasker, no voice assistant. Please help!!!!! I don't know what to do. I should have never unrooted it to unlock. I should have paid the $35 to get an unlock code. Can I fix this?
Click to expand...
Click to collapse
Have you flashed the full firmware?
serio22 said:
Have you flashed the full firmware?
Click to expand...
Click to collapse
I am not sure. I flashed NB1 as suggested by another forum member and everything is working once again. Although it went back to 4.4.2.
Now it has this notification : security notice: unauthorized actions have been detected. It wants me to reboot to revert the changes. How do I make this go away and will it go back to its unusable mode if I manually reboot?
Sent from my SAMSUNG-SGH-I337 using xda Forum
YES
TTAHER said:
I unlocked a Galaxy S4 SGH-I337 FROM ATT I am using Tmobile services.
My question is can I install a Stock ROM from TMobile instead of having the ATT one?
I like the Wifi Calling and Tethering option.
Click to expand...
Click to collapse
i have samsung galaxy s7 edge att unlocked with tmobile sim card and my last 2 ota upgrade are from tmobile G935TUVU4APK1
I currently have OTA 4.3 installed (Rogers version from SamMobile -SGH-i747M). I would like to unlock the phone. The only methods I could find involve reverting to 4.1.1, which is impossible after OTA 4.3 update (according to many other XDA threads). So, 2 questions:
1) Are there any known 4.3 unlock methods presently?
2) Are there any known methods for reverting 4.3 to 4.1.1 presently? (to use old unlock methods)
Thanks!
Update: I've been able to downgrade from 4.3 to 4.1.1 by using Mobile Odin ( http://forum.xda-developers.com/showthread.php?t=1347899 ), which does not flash the bootloader (so the bootloader stays at 4.3, bypassing the failures when trying to downgrade with regular Odin). It required rooting 4.3, which I achieved with method 2 here: http://forum.xda-developers.com/showthread.php?t=2538991
However, now when I attempt to use the unlock method posted here: http://forum.xda-developers.com/showthread.php?t=2014982 - when I get into the Service Mode screen, there are NO options (instead of the 3 before or the 4 required to complete the unlock). I've attempted flashing modems from this thread: http://forum.xda-developers.com/showthread.php?t=1831898 to no avail.
Suggestions?
sabrinaela said:
Update: I've been able to downgrade from 4.3 to 4.1.1 by using Mobile Odin ( http://forum.xda-developers.com/showthread.php?t=1347899 ), which does not flash the bootloader (so the bootloader stays at 4.3, bypassing the failures when trying to downgrade with regular Odin). It required rooting 4.3, which I achieved with method 2 here: http://forum.xda-developers.com/showthread.php?t=2538991
However, now when I attempt to use the unlock method posted here: http://forum.xda-developers.com/showthread.php?t=2014982 - when I get into the Service Mode screen, there are NO options (instead of the 3 before or the 4 required to complete the unlock). I've attempted flashing modems from this thread: http://forum.xda-developers.com/showthread.php?t=1831898 to no avail.
Suggestions?
Click to expand...
Click to collapse
You downgraded? What 4.1.1 Rom or file did you flash with mobile Odin to downgrade?
shortydoggg said:
You downgraded? What 4.1.1 Rom or file did you flash with mobile Odin to downgrade?
Click to expand...
Click to collapse
I tried both the 4.1.1 AT&T and the 4.1.1 Rogers files from SamMobile (the phone is locked to Rogers). In both cases, in About Phone the "baseband" shows as "unknown", which I'm guessing is why the Service Mode menu shows nothing: something about being unable to detect the modem? Using regular Odin to flash the Rogers 4.3 ROM puts it back to its normal state with the baseband showing normally.
Another possibility is that the 4.3 bootloader (which cannot be downgraded) does something funny so that even if you're running 4.1.1 for everything else (bootloader still at 4.3), it screws things up? Not sure how that would work.
Tried another method - No luck
Update:
I've tried the 4.3 method suggested by Mr. X in this thread: http://forum.xda-developers.com/showthread.php?t=2529200
Unfortunately it didn't work for me (a couple other posters report that it didn't work for their 4.3 devices either).
I have seen some variants of the Service Mode unlock with different menu options (since 4.3 doesn't have the 4 required that are visible in 4.1.1). Any suggestions on other menu options that might work?
Any other ideas for unlocking 4.3 devices?
Bump - Lots of people have same issue
I've been watching the forums and this thread keeps coming up. Lots of people want to unlock from OTA 4.3. I'm bumping this thread because I've detailed what I've already tried with links so that things don't get repeated too much.
Anyone found a way to unlock from 4.3 yet?
sabrinaela said:
I've been watching the forums and this thread keeps coming up. Lots of people want to unlock from OTA 4.3. I'm bumping this thread because I've detailed what I've already tried with links so that things don't get repeated too much.
Anyone found a way to unlock from 4.3 yet?
Click to expand...
Click to collapse
I asked the same question a while ago and no answers came up. http://forum.xda-developers.com/showthread.php?t=2541909
I ended up paying one these services that give you the code. If you do that make sure you are on stock ROM or it won't work. Hope some solution comes up.
I think we can rule out unlocking phone ourselves.
Thanks for info. So cellunlocker works.
I looked at sammobile unlocker as well... but was uncertain if they service US customers, as they charge in uk currency.
Has someone in US tried sammobile unlock service on s3 on 4.3 successfully?
Sent from my GT-N8013 using Tapatalk
You guys try "galaxSim unlock" from the play store...says it has 4.3 support. Worth a try. I think there is actually a thread on xda that the developer lets you use the app for free.
http://forum.xda-developers.com/showthread.php?p=30541172
Edit... nevermind says US qualcomm devices not supported at this time.
GL
Sent from my SGH-I747M using XDA Premium 4 mobile app
Just unlocked my s3 from cellunlocker, so can comfirm that.
Sent from my SAMSUNG-SGH-I747 using Tapatalk
Bump - Seeing lots of threads. Anything yet?
Bump. I'm still seeing this thread appear a lot. Anyone have an unlock method for OTA 4.3 yet?
sabrinaela said:
Bump. I'm still seeing this thread appear a lot. Anyone have an unlock method for OTA 4.3 yet?
Click to expand...
Click to collapse
bump
sabrinaela said:
Bump. I'm still seeing this thread appear a lot. Anyone have an unlock method for OTA 4.3 yet?
Click to expand...
Click to collapse
Still not possible.
Ive just tried 4.1.1 - success
second one with Mr.X methodon 4.3 NO success.
The z3x box team reports unlocking on rooted 4.3 firmware by imei re-write method = success.
Code:
http://forum.gsmhosting.com/vbb/f453/samsung-i747-4-3-unlocked-1750949/index2.html
Thanks.
Has anyone tried RegionLock Away?
iBowToAndroid said:
Has anyone tried RegionLock Away?
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Click to collapse
I didn't know that these phones were region-locked. Does this mean that a Canadian s3 that has been sim unlocked may not work in Europe?
audit13 said:
I didn't know that these phones were region-locked. Does this mean that a Canadian s3 that has been sim unlocked may not work in Europe?
Click to expand...
Click to collapse
US phones aren't region locked because they're already SIM locked (I have no idea what the situation is with the Verizon Note 3). I'm not sure about Canadian phones - the region lock appears to exist on phones that are sold unlocked. (All you have to do is activate the phone in the region it was intended to be sold/used in and the region lock is removed - you only encounter issues when the first service you try to use the phone with is outside of its region.) But someone found that RegionLock Away SIM unlocked his T-Mo Note 3, and since then it's been found to remove the SIM lock on quite a few Samsung devices
Hey guys! This might sound noobish, but i really never flashed, rooted, or anything on a droid/etc before. So atm I bought a galaxy s4 for my dad, and tried unlocking this stupid phone, but unlocking thru the dialer didnt work(couldnt even get *#27663368378# to work, when using *#0011#, still couldnt do anything.) All i know about it, is that it recognizes the European sim card, but the simple mobile(usa) sim card doesnt recognize, can't make calls, etc, as when you try to make a call it says "cant register to network" or w.e. So i was wondering what should I do? Do i need to flash the modem? rom? Root it? I want it to be able to work in global, in usa and euro.
On another note, I got my other phone that's on ver 4.2.2. Should i try upgrading my modem/baseband from mdl to nb4? Anything new with the new modem or anything i should update? Since i cant update OTA anymore on my 4.2.2. lol. Any suggestions would be awesome Tell me from your point of you, is it better to stay at 4.2.2? or just get the 4.4.2, and should i root my phone? Any vernabilities/security problems if done?
I found this: http://forum.xda-developers.com/showthread.php?t=2780006
Samsung Galaxy S4 M919 T-mobile
ROM: M919UVUFNB4
4.4.2 kitkat
Den Den said:
Hey guys! This might sound noobish, but i really never flashed, rooted, or anything on a droid/etc before. So atm I bought a galaxy s4 for my dad, and tried unlocking this stupid phone, but unlocking thru the dialer didnt work(couldnt even get *#27663368378# to work, when using *#0011#, still couldnt do anything.) All i know about it, is that it recognizes the European sim card, but the simple mobile(usa) sim card doesnt recognize, can't make calls, etc, as when you try to make a call it says "cant register to network" or w.e. So i was wondering what should I do? Do i need to flash the modem? rom? Root it? I want it to be able to work in global, in usa and euro.
On another note, I got my other phone that's on ver 4.2.2. Should i try upgrading my modem/baseband from mdl to nb4? Anything new with the new modem or anything i should update? Since i cant update OTA anymore on my 4.2.2. lol. Any suggestions would be awesome Tell me from your point of you, is it better to stay at 4.2.2? or just get the 4.4.2, and should i root my phone? Any vernabilities/security problems if done?
I found this: http://forum.xda-developers.com/showthread.php?t=2780006
Samsung Galaxy S4 M919 T-mobile
ROM: M919UVUFNB4
4.4.2 kitkat
Click to expand...
Click to collapse
To unlock your dad's phone the guide you linked to should do what you need done.
As far as your phone still on MDL, you should be able to use the old method through the service menu to unlock if that's what you wanted to do. You can update your modem/baseband if you desire, although if you're staying on stock 4.2.2 TouchWiz there is really no need to. It's only when you flash ROMs based on 4.3 and above that you run into issues using the MDL modem/baseband.
To add to lordcheeto's post, there's a difference between MDL bootloader and the MDL modem. When the S4 was released with Android 4.2 it had an unlocked bootloader (MDL), but with Android 4.3 and 4.4 Samsung included new security software called Knox. Knox doesn't prevent rooting, but if you flash a custom recovery such as CWMR, TWRP, or Philz Touch then a security flag will be irreversibly tripped which voids your warranty. Because this Knox software is tied into the bootloader, developers found a way around it by extracting the modems from 4.3 (MK2) and 4.4 (NB4) firmwares which allows us to keep our MDL bootloader and still use 4.2, 4.3, and 4.4 roms. The advantages are that we keep our warranty and we're able to use any 4.2+ rom. We can downgrade and upgrade easily while Knox phones can't.
lordcheeto03 said:
To unlock your dad's phone the guide you linked to should do what you need done.
As far as your phone still on MDL, you should be able to use the old method through the service menu to unlock if that's what you wanted to do. You can update your modem/baseband if you desire, although if you're staying on stock 4.2.2 TouchWiz there is really no need to. It's only when you flash ROMs based on 4.3 and above that you run into issues using the MDL modem/baseband.
Click to expand...
Click to collapse
Should i keep the 4.4.2 kitkat thats not working with my usa sim card atm? Or should i flash it to 4.2.2. ADL? If having 4.2.2 is better doing that guide i put link to above, then give me a good tut on doing it, need to do it today xD THanks in Advance!
HampTheToker said:
To add to lordcheeto's post, there's a difference between MDL bootloader and the MDL modem. When the S4 was released with Android 4.2 it had an unlocked bootloader (MDL), but with Android 4.3 and 4.4 Samsung included new security software called Knox. Knox doesn't prevent rooting, but if you flash a custom recovery such as CWMR, TWRP, or Philz Touch then a security flag will be irreversibly tripped which voids your warranty. Because this Knox software is tied into the bootloader, developers found a way around it by extracting the modems from 4.3 (MK2) and 4.4 (NB4) firmwares which allows us to keep our MDL bootloader and still use 4.2, 4.3, and 4.4 roms. The advantages are that we keep our warranty and we're able to use any 4.2+ rom. We can downgrade and upgrade easily while Knox phones can't.
Click to expand...
Click to collapse
What do you suggest? Should i downgrade to 4.2.2.? Or just run with the guide i posted above keeping the 4.4.2. NB4, I just need it to run so i can call, use date, and go to euro and use in usa ofc. Ive been using my 4.2.2. pretty good so far, been almost a year and had no problems with it, should i worry about updating my modem on my 4.2.2.? or anything important, etc? If i should go with 4.2.2., i need to root it eh? If so, point me to the good rooting method and downgrading to 4.2.2. frin 4.4.2 Kitkat(updated OTA). Thanks in Advance!
Den Den said:
What do you suggest? Should i downgrade to 4.2.2.? Or just run with the guide i posted above keeping the 4.4.2. NB4, I just need it to run so i can call, use date, and go to euro and use in usa ofc. Ive been using my 4.2.2. pretty good so far, been almost a year and had no problems with it, should i worry about updating my modem on my 4.2.2.? or anything important, etc? If i should go with 4.2.2., i need to root it eh? If so, point me to the good rooting method and downgrading to 4.2.2. frin 4.4.2 Kitkat(updated OTA). Thanks in Advance!
Click to expand...
Click to collapse
I thought the answers given were pretty clear... I'm actually confused about what phone you're asking about, and if there are, in fact, 2 different phones in question... My answer will be a bit lengthy, but I hope that you can put 1 and 2 together and apply the information I am about to type to your particular situation: Also, I'm not trying to be a ****, just concise.
In reference to the S4 that is on 4.4.2 (NB4) firmware: The unlock method which you posted SHOULD enable the device to use different SIM cards and function in "euro" and "usa." That includes making calls and using "date" (data?) as you mentioned. As far as your question on reverting that particular device: There is no way whatsoever to downgrade the firmware on a device running either stock 4.3 (MK2) or stock 4.4.2 (NB4) obtained by flashing via Odin, Kies, or OTA; so that idea can be forgotten about. The unlock method, from what I gather, simply reverts the modem and allows you to use the old unlock method. then returns the modem to NB4. It does not touch the firmware, bootloader, or anything other than the modem/baseband.
For whichever device this applies to: there should be no need to root either to accomplish either goal. If you wish to root, then I can point you in the right direction; otherwise, if you haven't needed it so far and don't foresee needing it in the future, I say don't worry about it.
As for the device running 4.2.2: if you have had no troubles with reception, then there is no need to update your modem/baseband. There are really only 2 times that updating your modem would come in handy. 1: If you are having reception problems, or 2: If you plan on keeping your bootloader at MDL AND using custom ROMs 4.3 and above. The benefit of this scenario is that keeping your bootloader on MDL means that your device does not have the KNOX-implemented bootloader and can easily be reverted to a completely stock state for warranty purposes yet you still get to have the most up-to-date version of Android. If neither of those conditions apply to you, then there is really no real need to update your modem.
Den Den said:
What do you suggest? Should i downgrade to 4.2.2.? Or just run with the guide i posted above keeping the 4.4.2. NB4, I just need it to run so i can call, use date, and go to euro and use in usa ofc. Ive been using my 4.2.2. pretty good so far, been almost a year and had no problems with it, should i worry about updating my modem on my 4.2.2.? or anything important, etc? If i should go with 4.2.2., i need to root it eh? If so, point me to the good rooting method and downgrading to 4.2.2. frin 4.4.2 Kitkat(updated OTA). Thanks in Advance!
Click to expand...
Click to collapse
The guide you posted should work just fine. Just follow the instructions.
Also, I left out one of the most important parts of having the modems extracted from the 4.3 and 4.4 firmwares. The reason for extracting the modems is so that we can flash them separately from the official firmware which would upgrade us to a Knox bootloader. Using the 4.2 modem with 4.3 and 4.4 roms causes data and sound issues that make the phone pretty much unusable. The same goes for using the 4.3 modem with a 4.4 rom. With the extracted modems we can flash them separately for whatever Android version we're using and have full functionality and retain the MDL bootloader and all it's perks.
If you use a 4.2 rom, you'll need to make sure to flash the MDL modem with it.
For 4.3 roms, you'll need to be on MK2 modem.
4.4 roms require NB4 modem.
As long as you don't update to official 4.3 or 4.4, you'll be able to use any version rom you want according to your preference. Personally, I use 4.4 roms, but it's nice to have the option to go back to 4.2 if I want to. Once you SIM unlock, it should stick between all versions. You should be able to flash any rom that you want without having to worry about going through that process again.
lordcheeto03 said:
I thought the answers given were pretty clear... I'm actually confused about what phone you're asking about, and if there are, in fact, 2 different phones in question... My answer will be a bit lengthy, but I hope that you can put 1 and 2 together and apply the information I am about to type to your particular situation: Also, I'm not trying to be a ****, just concise.
In reference to the S4 that is on 4.4.2 (NB4) firmware: The unlock method which you posted SHOULD enable the device to use different SIM cards and function in "euro" and "usa." That includes making calls and using "date" (data?) as you mentioned. As far as your question on reverting that particular device: There is no way whatsoever to downgrade the firmware on a device running either stock 4.3 (MK2) or stock 4.4.2 (NB4) obtained by flashing via Odin, Kies, or OTA; so that idea can be forgotten about. The unlock method, from what I gather, simply reverts the modem and allows you to use the old unlock method. then returns the modem to NB4. It does not touch the firmware, bootloader, or anything other than the modem/baseband.
For whichever device this applies to: there should be no need to root either to accomplish either goal. If you wish to root, then I can point you in the right direction; otherwise, if you haven't needed it so far and don't foresee needing it in the future, I say don't worry about it.
As for the device running 4.2.2: if you have had no troubles with reception, then there is no need to update your modem/baseband. There are really only 2 times that updating your modem would come in handy. 1: If you are having reception problems, or 2: If you plan on keeping your bootloader at MDL AND using custom ROMs 4.3 and above. The benefit of this scenario is that keeping your bootloader on MDL means that your device does not have the KNOX-implemented bootloader and can easily be reverted to a completely stock state for warranty purposes yet you still get to have the most up-to-date version of Android. If neither of those conditions apply to you, then there is really no real need to update your modem.
Click to expand...
Click to collapse
That Makes sense...just trying to grasp info. on everything so it's more clearer ;p and thanks for correcting me, yea it was data lol.
HampTheToker said:
The guide you posted should work just fine. Just follow the instructions.
Also, I left out one of the most important parts of having the modems extracted from the 4.3 and 4.4 firmwares. The reason for extracting the modems is so that we can flash them separately from the official firmware which would upgrade us to a Knox bootloader. Using the 4.2 modem with 4.3 and 4.4 roms causes data and sound issues that make the phone pretty much unusable. The same goes for using the 4.3 modem with a 4.4 rom. With the extracted modems we can flash them separately for whatever Android version we're using and have full functionality and retain the MDL bootloader and all it's perks.
If you use a 4.2 rom, you'll need to make sure to flash the MDL modem with it.
For 4.3 roms, you'll need to be on MK2 modem.
4.4 roms require NB4 modem.
As long as you don't update to official 4.3 or 4.4, you'll be able to use any version rom you want according to your preference. Personally, I use 4.4 roms, but it's nice to have the option to go back to 4.2 if I want to. Once you SIM unlock, it should stick between all versions. You should be able to flash any rom that you want without having to worry about going through that process again.
Click to expand...
Click to collapse
So If i was on 4.3, and it updated to 4.4.2 kitkat, means it went to the official update eh? As "lordcheeto03" said that once u go to 4.3 or 4.4.2 you cant go back to 4.2, the menu options and w.e go updated, the "about me" is now yellow, the top border of the phone is grey, etc. The new security is enforcing, I guess I'll try the guide i found, hope i don't do anything stupid or skip a step(usually doesn't happen) but feels kinda weird doing things the first time.
On another note, if a phone bricks or in a loop, etc can it be solved? So i still have hope if something goes wrong xD
edit: The guide i link that i found, it works for all m919 models? Since i got t-mobile, not sure if all models(tmobile, att, etc) have the same modem, wouldnt want to brick cuz of not flashing the correct file, w.e(disregard this, i forgot i posted in the t-mobile section, man sometimes i feel like an idiot because i dont double check xD)
Den Den said:
So If i was on 4.3, and it updated to 4.4.2 kitkat, means it went to the official update eh? As "lordcheeto03" said that once u go to 4.3 or 4.4.2 you cant go back to 4.2, the menu options and w.e go updated, the "about me" is now yellow, the top border of the phone is grey, etc. The new security is enforcing, I guess I'll try the guide i found, hope i don't do anything stupid or skip a step(usually doesn't happen) but feels kinda weird doing things the first time.
On another note, if a phone bricks or in a loop, etc can it be solved? So i still have hope if something goes wrong xD
edit: The guide i link that i found, it works for all m919 models? Since i got t-mobile, not sure if all models(tmobile, att, etc) have the same modem, wouldnt want to brick cuz of not flashing the correct file, w.e(disregard this, i forgot i posted in the t-mobile section, man sometimes i feel like an idiot because i dont double check xD)
Click to expand...
Click to collapse
Once you hit 4.3, you lost your ability to downgrade. You can upgrade, but you can't go back. Rest easy, as long as you can get into download mode, you can recover your device. Bootloop, soft brick, whatever; as long as Power + volume down brings you to download mode everything is still OK. Just read the directions a few times.. get used to the idea of what's going on, double check and make sure you have the right software and files, and jump in. You'll do fine. Even after years of jailbreaking iphones and rooting Droids, I still get nervous whenever I have to fire up Odin; but just remember... many many others (more than have posted in that thread for sure) have done the same thing you're about to do, so as long as you follow the directions you will be fine!
lordcheeto03 said:
Once you hit 4.3, you lost your ability to downgrade. You can upgrade, but you can't go back. Rest easy, as long as you can get into download mode, you can recover your device. Bootloop, soft brick, whatever; as long as Power + volume down brings you to download mode everything is still OK. Just read the directions a few times.. get used to the idea of what's going on, double check and make sure you have the right software and files, and jump in. You'll do fine. Even after years of jailbreaking iphones and rooting Droids, I still get nervous whenever I have to fire up Odin; but just remember... many many others (more than have posted in that thread for sure) have done the same thing you're about to do, so as long as you follow the directions you will be fine!
Click to expand...
Click to collapse
Thanks for the reply, now I'm all fired up and ready to do this I'll post back here when i'm done and see how it went xD
Edit: Can i ask you a favor? Could you get me the "M919UVUFNB4_M919TMBFNB4_TMB.zip" modem file and "M919UVUAMDL_M919TMBAMDL_TMB.zip", i think that's what the tutorial link i posted is asking for. But the files r huge, 1.6gb, etc, would take me 3hrs+ each for each file to download just to extract the modem =/ If that's the only thing i need.
found these links: http://rapidgator.net/file/59487dc515500a0430ddaddc780fa555/TMB-M919UVUFNB4-20140314115123.zip.html
and : http://terafile.co/32d149264215/M919UVUAMDL_M919TMBAMDL_TMB.zip
Not sure if they are safe to use or not, not everything on the net is...plus they r huge files =/
Den Den said:
Thanks for the reply, now I'm all fired up and ready to do this I'll post back here when i'm done and see how it went xD
Edit: Can i ask you a favor? Could you get me the "M919UVUFNB4_M919TMBFNB4_TMB.zip" modem file and "M919UVUAMDL_M919TMBAMDL_TMB.zip", i think that's what the tutorial link i posted is asking for. But the files r huge, 1.6gb, etc, would take me 3hrs+ each for each file to download just to extract the modem =/ If that's the only thing i need.
found these links: http://rapidgator.net/file/59487dc515500a0430ddaddc780fa555/TMB-M919UVUFNB4-20140314115123.zip.html
and : http://terafile.co/32d149264215/M919UVUAMDL_M919TMBAMDL_TMB.zip
Not sure if they are safe to use or not, not everything on the net is...plus they r huge files =/
Click to expand...
Click to collapse
These files include modem.bin that is required... I'm not sure why the OP linked to the entire firmware instead of just those links, but anywho...
The NB4 modem can be found in this thread. It's only ~20MB.
The MDL modem is in this thread. It is ~25MB.
Also, quote me instead of just replying to the thread. I'll respond quicker
lordcheeto03 said:
These files include modem.bin that is required... I'm not sure why the OP linked to the entire firmware instead of just those links, but anywho...
The NB4 modem can be found in this thread. It's only ~20MB.
The MDL modem is in this thread. It is ~25MB.
Also, quote me instead of just replying to the thread. I'll respond quicker
Click to expand...
Click to collapse
Flashed ADL using odin, somehow got the menu to work(couldnt budge for some reason to umts), went thru all the steps, it rebooted, put it back to download mode, and flashed it back to nb4. Put my simplemobile simcard in, still nothing, am I supposed to put a different sim card in like ATT or something for it to work? Confused why it didnt work, yet it still detects the MTC european version simcard(not in service, but it had a pin set on it, so it always asks you to unlock the sim with the sim pin u put on it to view ur files on it, etc). Am i doing something wrong? I could give you more info on the phone...
Edit: Just checked on Swappa.com of my imei and got this =/
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Nvm, Looks like i think its blocked on Tmobiles network, but i put in the H2O sim and it worked.(under ATT) phew....
Hello,
I just bought my first Galaxy device (had a CDMA LG for a while, and I have a Nexus Tablet), and I am looking at how to get this new phone set up right. I bought my i747 retail, so I was unable to unlock it. However, now I'm struggling with finding the right method for upgrading, rooting, etc. I know nothing about knox or any of these Samsung intricacies. Could someone please give me a little guidance on how to go about getting to the OS and status that I'm looking for? This is what I've done so far:
Came unrooted with 4.1.2 stock rom
Unlocked using legit unlock code
Tried OTA updates, but none were available (must be because of unlock)
Rooted w/ ODIN using 4.1.1 file based of MrRobinson method. (http://forum.xda-developers.com/showthread.php?t=1739426)
Now I keep getting popups like process. ... .acore,media, etc. stopped.
I'm looking to ideally get a custom recovery (either CWM or TWRP, whichever is better) and either kitkat Touchwiz or possibly kitkat nexus stock (I read somewhere that it was possible). Also, i just bought it, and have the code still, so I don't mind deleting everything if needed. Regardless, I'd like the ability to get it back to pure stock with no flash counter (I have a manufacturer's warranty I want to use if need be).
Could someone please just give me a little guidance? I'm pretty capable with rooting, etc., so you'd only need to lead me to other threads, etc. that will take me where I want to go. Thank you very much.
Before flashing or doing anything else, confirm the bootloader on your phone. Download and install the Samsung Phone Info app from the playstore and post your bootloader.
audit13 said:
Before flashing or doing anything else, confirm the bootloader on your phone. Download and install the Samsung Phone Info app from the playstore and post your bootloader.
Click to expand...
Click to collapse
Well, the bad news is I already flashed using MrRobinson's instructions, and now my phone is barely workable, as things like process.android.media and Touchwiz keep crashing. I was able to install the info app though, and my bootloader is listed as I747UCDLK3. Thanks again though, and let me know what else you need from me.
I recommend starting over by flashing the stock AT&T 4.1.1 firmware from sammobile. Once flashed, boot the phone and make sure your phone is sim unlocked. If it isn't sim unlocked, unlock it using the free method or your unlock code.
http://www.sammobile.com/firmwares/database/SGH-I747/
After sim unlocking, run OTA updates until you have the latest stock AT&T ROM on your phone. Upgrading the phone's bootloader and modem is the easiest way to do it for someone that is new to the phone and custom ROMs.
audit13 said:
I recommend starting over by flashing the stock AT&T 4.1.1 firmware from sammobile. Once flashed, boot the phone and make sure your phone is sim unlocked. If it isn't sim unlocked, unlock it using the free method or your unlock code.
http://www.sammobile.com/firmwares/database/SGH-I747/
After sim unlocking, run OTA updates until you have the latest stock AT&T ROM on your phone. Upgrading the phone's bootloader and modem is the easiest way to do it for someone that is new to the phone and custom ROMs.
Click to expand...
Click to collapse
Thank you, but wouldn't OTA updates install Knox, which would basically void my warranty if I tried to flash anything after that? And, I've checked for OTA updates twice, once on 4.1.2 and on 4.1.1, and both times it said my software was up to date.
I spoke with StoneyJSG about my situation, and he suggested that I go to stock 4.1, root w/ saferoot, then flash a kitkat custom rom without Knox through TWRP. That way, I could use triangle away and flash stock unrooted if I needed to send it in.
Although, I'm not sure if I should do that, as I thought I read that you need to update the radio and bootloader first before you can install a custom kitkat rom from jelly bean, but I'm still not entirely sure how that works.
The most recent release of many custom ROMs will not work but you may not have a signal without an updated modem and you should not be running updated modems on an older bootloader. Doing this could brick your phone.
With a rooted system, OTA updates will not work.
Thank you again for helping walk me through the minutia around this phone.
I think I have a much better understanding of everything now. I read the following article on Knox (http://omegadroid.co/wanted-knox-void-warranty-0x1/) and with an understanding of that, I get now that there is no way to load any custom rom on 4.3 or higher without losing my warranty.
So, basically my options are to stay at 4.1 and flash whatever, using triangle away to erase my tracks. Or, I could update to 4.3, but only be able to use saferoot/towelroot, otherwise I'd trip the warranty void. But, if all I did use was towelroot (no custom recovery or rom), then I could just unroot the phone using the full unroot option in SuperSU and send it on in for service if needed, right?
Also, I did unroot my phone and did a factory reset, so it's back at 4.1.1 and unrooted. Yet, I still do not see any software updates available from Samsung. I even plugged it into Kies, and nothing (http://i.imgur.com/E0xPGpf.png). Does anyone know why this could be? Does it have something to do with my not having a carrier for the phone yet? I'm sorry for all the questions, but I do appreciate your help.
jateed said:
Thank you again for helping walk me through the minutia around this phone.
I think I have a much better understanding of everything now. I read the following article on Knox (http://omegadroid.co/wanted-knox-void-warranty-0x1/) and with an understanding of that, I get now that there is no way to load any custom rom on 4.3 or higher without losing my warranty.
So, basically my options are to stay at 4.1 and flash whatever, using triangle away to erase my tracks. Or, I could update to 4.3, but only be able to use saferoot/towelroot, otherwise I'd trip the warranty void. But, if all I did use was towelroot (no custom recovery or rom), then I could just unroot the phone using the full unroot option in SuperSU and send it on in for service if needed, right?
Also, I did unroot my phone and did a factory reset, so it's back at 4.1.1 and unrooted. Yet, I still do not see any software updates available from Samsung. I even plugged it into Kies, and nothing (http://i.imgur.com/E0xPGpf.png). Does anyone know why this could be? Does it have something to do with my not having a carrier for the phone yet? I'm sorry for all the questions, but I do appreciate your help.
Click to expand...
Click to collapse
What is your cell service? If not AT&T, you will never get OTA.
Whether you get OTA can vary from carrier to carrier and phone to phone in my opinion.
I have a Rogers HTC One X that gets OTA updates from HTC even though I am on the Bell network.
I have a Bell S3 that is running on the Rogers network and it receives OTA updates from Bell even though it has a Rogers sim card in the phone.
I have a Telus Moto G running on the Bell network and it received the Telus KK OTA update while connected to the Bell network.
audit13 said:
Whether you get OTA can vary from carrier to carrier and phone to phone in my opinion.
I have a Rogers HTC One X that gets OTA updates from HTC even though I am on the Bell network.
I have a Bell S3 that is running on the Rogers network and it receives OTA updates from Bell even though it has a Rogers sim card in the phone.
I have a Telus Moto G running on the Bell network and it received the Telus KK OTA update while connected to the Bell network.
Click to expand...
Click to collapse
Well, I have an AT&T model which I unlocked and will be putting on Cricket at the end of the week (when my plan month is set to end). Right now there's no SIM in it, and I've been doing everything over wifi. I looked up whether the carrier had something to do with the OTAs, and I was told that Samsung sent the updates out, not AT&T, so I figured that the carrier info was irrelevant. I now wonder what my options are.
Can I manually flash 4.3 stock without tripping the knox warranty void?
Does Towelroot/Xposed framework trip the Knox void flag?
If I can update to 4.3/4.4 and root without tripping the knox flag, I might just manually update and just run towelroot and xposed to modify my OS the best I can until my warranty runs out.
If I can't root it at all once I'm on 4.3+, then I'll just sit on 4.1.1 for a few months until I can't stand it anymore and just void the warranty anyway.
Thanks again everyone. This whole knox/binary counter thing is not something I dealt with on my CDMA LG or Nexus, so I was totally in the dark about how it all worked. This is also my first GSM phone, so all those intricacies are new to me too. Once I know about manually flashing stock and running towelroot/xposed, I think I'll be in good shape.
Flashing the stock 4.3 ROM should not trip the counter as long as you do not need to install a custom recovery to flash it.
Apparently, the latest KK stock ROM cannot be rooted using Towelroot.
If you want a custom ROM, use one that will work with a 4.1.1 bootloader and modem. Once on 4.3 or higher, it's a little harder to recover from a soft brick.
audit13 said:
Flashing the stock 4.3 ROM should not trip the counter as long as you do not need to install a custom recovery to flash it.
Apparently, the latest KK stock ROM cannot be rooted using Towelroot.
If you want a custom ROM, use one that will work with a 4.1.1 bootloader and modem. Once on 4.3 or higher, it's a little harder to recover from a soft brick.
Click to expand...
Click to collapse
Excellent. If I did flash stock, i would just use ODIN, then factory reset to wipe the caches. And that's good to know about the KK rom, as I would probably update straight to 4.4 if at all (I've read a lot of bad things about 4.3 on the S3), but not if it means I cannot root safely and cleanly.
I'll check out the custom roms for 4.1.1. I know that flashing the rom and/or a custom recovery will trip the binary counter, but I can just use triangle away to clean that up. Do you know if there is a list of custom 4.1.1/4.1.2 roms somewhere, or do I need to scour the older threads here?
Thank you very much audit13 (thanks to StoneyJSG and pre4speed as well). You have been immensely helpful and really brought me up to speed on everything surrounding S3 customization. Needless to say it's way more complicated than what I've dealt with from LG and Google/Asus. (I mean, i could root my nexus with a single click using Wugfresh's toolkit)
4.1.1 is the only complete stock ROM that AT&T released for flashing via Odin.
4.3 ROMS and higher were prepared by XDA members for flashing in either a custom recovery or Odin.
audit13 said:
4.1.1 is the only complete stock ROM that AT&T released for flashing via Odin.
4.3 ROMS and higher were prepared by XDA members for flashing in either a custom recovery or Odin.
Click to expand...
Click to collapse
Oh, so what other way can you flash a stock rom, if not through ODIN or a custom recovery? Regardless, it seems as though I really should not dive into 4.3+ until I'm ready to concede that my warranty is over. There are just too many potential pitfalls and headaches.
On the lighter side, I've found a few 4.1.2 based custom roms that have some promise. I'm going to post them here in case anyone has opinions on them, or if someone else in my situation sees this thread and wants to go custom 4.1 too:
Hyperdrive RLS16
http://forum.xda-developers.com/showthread.php?t=2176793
Slim Bean-d2
http://forum.xda-developers.com/showthread.php?t=1865262
Jedi Academy
http://www.teamandroid.com/2013/12/...oid-412-jedi-academy-jelly-bean-custom-rom/2/
Jelly ‘Beans’
http://www.teamandroid.com/2013/04/...ndroid-412-att-galaxy-s3-sgh-i747-custom-rom/
I was also torn when I got my s3 that was running 4.1.2. I downgraded to 4.1.1, sim unlocked the phone, used it on stock 4.1.2 for about a week to make sure everything was working, hardware wise, upgraded to stock 4.4.2, installed a custom recovery and a custom ROM. I wasn't too concerned about the warranty since I got the phone as a free upgrade and had no intention of using the s3 as my daily phone. I kept it as a backup until my niece needed and phone and then it went to her. It's been over a year and there are still no problems with the phone.
I need help, I don't know wtf I was thinking, my sprint s6 is on CPF4 and sim UnLocked, I was going to upgrade to PL3, with Odin, run CF-Auto Root Next, Then TWRP, Then Flash TDH-JR v1.0 .... I Ran CF-Autoroot First like a idiot, I'm rooted on CPF4, tried to go ahead and remain calm and used Flashify to Flash TWRP, only to get stock recovery and if it worked was going to stay on CPF4 and figure something out but, this phone is Sim Unlocked, and I'm starting to worrying I'm going to lose it
UPDATE: SOLVED , NOW ROCKIN DEBLOATED. JAH, ITS BADASS, INSTALLING BLACKED OUT EVERYTHING RIGHT NOW!!! QUESTIONS JUST ASK, OR ILL BE BACK TO TELL WHAT I DID WRONG
Ps: HAHA AND IM STILL UNLOCKED USING METROPCS
Did you get sorted out or do you still need help? Typically if you update an unlocked phone's firmware, you will be locked again and will need to unlock. Not what you want to hear, I am sure, but that is as much as I know on the topic.
not for me. I am using an unlocked S6 Sprint now outside US and have been updating firmware so many times, the phone wont be locked again UNLESS you change the CSC (SPR, XAS...).
yaibakt said:
not for me. I am using an unlocked S6 Sprint now outside US and have been updating firmware so many times, the phone wont be locked again UNLESS you change the CSC (SPR, XAS...).
Click to expand...
Click to collapse
Interesting and I did not know that. How would the OP know if it was safe to upgrade? Check that his current (or prior version, not sure where he is in the process) was SPR and then proceed to use a TAR that was the same?
koop1955 said:
Interesting and I did not know that. How would the OP know if it was safe to upgrade? Check that his current (or prior version, not sure where he is in the process) was SPR and then proceed to use a TAR that was the same?
Click to expand...
Click to collapse
Not necessary either.
I did tried to download different tar files of the same Sprint firmware version which are SPR, XAS,... and guess what? They are exactly the same, even every bit.
That means, OP could flash any csc tar file, as long as its for s6 sprint (g920p***** tar file). The phone stays unlocked still.
The only thing that locked my s6 back was when i used Samsung phone info app to change the CSC. The phone rebooted and locked. I had to unlocked it again and it costed me some bucks...
How did you unlock your phone?