[Q] Is safe to Downgrade modem Samsung Galaxy s3 ? - T-Mobile, Samsung Galaxy SIII

i was reading this link http://forum.xda-developers.com/showthread.php?t=2370981 and my question if is safe to flash firmware on a samsung galaxy s3 sgh-t999n whit the one on sgh-t999 and no brick my phone? sorry my english :silly:
ejem. using this ¬
T999_UVDLJC
Official JB Firmware - Latest JB 4.1.1 Firmware
thanks for your help every one.

You can use that thread. But you can't use firmware for T999 on your phone. Better use firmware for T999L

ok
Perseus71 said:
You can use that thread. But you can't use firmware for T999 on your phone. Better use firmware for T999L
Click to expand...
Click to collapse
Thank you for your answer.... so is there any way to network ulock my phone sgh-t999n? i need to pay for a imei unlock

I believe you may be out of luck. Your Device never came out with 4.1.1 firmware. So you may be out of luck.
You could try flashing a SGH-T999 Modem UVDLJC and then try this thread. But because flashing wrong modem is risky, I would not recommend it.

Related

Is this safe to flash?

Hey folks I found this update to 4.1.2 on a site, it says that it can be done with a network unlocked s3. I'm using a t999 right now, will this brick the phone if I flash through odin? I unlocked my phone through the service choose I found on here a while back, here's the link:
http://androidadvices.com/xxellc-galaxy-s-3-jellybean-4-1-2-firmware/
Let me know if this is safe? Or you decide can compile it for us carriers? Thanks
Sent from my SGH-T999
no and more then likely 99% no
jay4mont78 said:
Hey folks I found this update to 4.1.2 on a site, it says that it can be done with a network unlocked s3. I'm using a t999 right now, will this brick the phone if I flash through odin? I unlocked my phone through the service choose I found on here a while back, here's the link:
http://androidadvices.com/xxellc-galaxy-s-3-jellybean-4-1-2-firmware/
Let me know if this is safe? Or you decide can compile it for us carriers? Thanks
Sent from my SGH-T999
Click to expand...
Click to collapse
dude you already answered your own questions...read...
the title clearly says "Update Galaxy S3 GT I9300 with Official XXELLC Jellybean 4.1.2 Firmware"
is your device a GT I9300? i didn't think so...
please read next time pay more attention. you don't want to end up with an expensive brick.

[Q] Roms for T999L T-Mobile

Im new to this part of XDA, I just recently purchased a Galaxy S3 T999L.
Purchasing this phone, I had no idea there was a non LTE Model which leads me in a bit of confusion when looking for a custom Rom
Im no rookie when it comes to flashing. If you look Below in my sig you can see the devices I currently have and have flashed different roms many times in the past. My question is what ROMs will work with my T999L? Ive looked and to my confusion have seen more for the T999 than anything since its been around much longer.. I've been looking and the forum here is a bit fragmented and its hard to see which ROM will go to which device. Please forgive me for my ignorance, Im just trying to play catch up, and perhaps contribute in the future in some way.
Edit: Im more familiar with flashing Tablets than phones, I dont have much experience with flashing radios and other phone related stuff...Is there a Difference with T999 and T999L other than the Radio?
edit 2: No comments? I guess either i said the wrong thing, or I posted in the wrong forum..
Thank you in advance
The t-999 ROMs will work with your t-999l, except the 4.3 touchwiz ROMs for the moment. 4.3 aosp/cm/aokp is fine.. There's really not much difference between the two, except the t-999l was updated to support lte.. Do not flash a t-999 modem to your t-999l, it won't brick but it won't pick up service at all. I suggest looking at the t-999l and t-999n q&a thread for further info
Sent from my SGH-T999 using Tapatalk
Zaphodspeaks said:
edit 2: No comments? I guess either i said the wrong thing, or I posted in the wrong forum..
Thank you in advance
Click to expand...
Click to collapse
Probably because there is a thread just for this. ... use the search function Thank you.
Sent from my SGH-T999L using xda app-developers app
chjema said:
Probably because there is a thread just for this. ... use the search function Thank you.
Sent from my SGH-T999L using xda app-developers app
Click to expand...
Click to collapse
I did just that.... And u didn't have to be rude about it..
Thanks for your input
Don't mean to hi-jack this thread but it kind of pertains the the question. I have the T999L as well. I've read Doc's informational thread about the T999L and T999N.
In terms of this part:
"ONLY flash T999L firmware to a T999L and T999N firmware to a T999N!!!!
If it does not match your model EXACTLY, it will almost certainly brick your device!!!"
I keep reading I can safely flash T999 roms, kernels, etc. But it's the firmware process that confuses me. Should I only stick to 4.1.2 roms (can I even flash Jamison's 4.1.1 rom for example), or can I flash a 4.3 TW rom in the future, assuming the leaked builds get LTE support when the official update comes out?
Thanks in advance.
serio22 said:
The t-999 ROMs will work with your t-999l, except the 4.3 touchwiz ROMs for the moment. 4.3 aosp/cm/aokp is fine.. There's really not much difference between the two, except the t-999l was updated to support lte.. Do not flash a t-999 modem to your t-999l, it won't brick but it won't pick up service at all. I suggest looking at the t-999l and t-999n q&a thread for further info
Sent from my SGH-T999 using Tapatalk
Click to expand...
Click to collapse
If that's true then how come the T999L wasn't updated to 4.3 alongside the T999? The 4.1.2 software wasn't even the same. No multi-window, no Note 2 photo gallery, still rockin the old "My Files" app on the T999L 4.1.2 software.....At first I thought it was just the "LTE Radio" difference but I guess there's more to it seeing the differences in software.
MyanRagahis said:
Don't mean to hi-jack this thread but it kind of pertains the the question. I have the T999L as well. I've read Doc's informational thread about the T999L and T999N.
In terms of this part:
"ONLY flash T999L firmware to a T999L and T999N firmware to a T999N!!!!
If it does not match your model EXACTLY, it will almost certainly brick your device!!!"
I keep reading I can safely flash T999 roms, kernels, etc. But it's the firmware process that confuses me. Should I only stick to 4.1.2 roms (can I even flash Jamison's 4.1.1 rom for example), or can I flash a 4.3 TW rom in the future, assuming the leaked builds get LTE support when the official update comes out?
Thanks in advance.
Click to expand...
Click to collapse
Firmware refers to the files used in Odin, so for those, make sure you use the ones for your device only. You can flash any ROM, even 4.1.1 I believe.. And yes once there's a leaked 4.3 firmware for the t999l you should be able to just flash the modem and then flash a 4.3 tw ROM, based on what we experienced with the t999
Sent from my SGH-T999 using Tapatalk
serio22 said:
Firmware refers to the files used in Odin, so for those, make sure you use the ones for your device only. You can flash any ROM, even 4.1.1 I believe.. And yes once there's a leaked 4.3 firmware for the t999l you should be able to just flash the modem and then flash a 4.3 tw ROM, based on what we experienced with the t999
Sent from my SGH-T999 using Tapatalk
Click to expand...
Click to collapse
Thanks a lot for this. Been bugging me for a while now. I'll probably take the plunge soon and use "The Recovery Way." Rooted my first S3 using motochopper back in June or July when I first got it, but problems arose and exchanged it at Costco (just got it and WiFi wouldn't connect after a factory reset). Been scared since lol. Also scared me that I wouldn't receive official updates anymore as it said it was modified, but that doesn't bug me anymore reading all the complaints about the whole no turning back.
Thanks again!
I'm looking into flashing a custom ROM onto my T999L for the first time as well...have any of you guys taken the plunge yet, and have any feedback on specific ROMS? I think I will try with AOKP

[Q] Have anyone tried t889v 4.3 official in t889?

Hi guyz i am using sgh t889 note 2 tmobile and on stck 4.1.2 and eagerly waiting for official 4.3 update i talked to tmobile support on facebook page they say they dont have any info about 4.3 update guyz have anyone of u tried sgh t889v(canada) note 2 4.3 oficial stock rom into sgh t889 tmobile how to flash it will it work on my tmobile note 2 flawlessly kindly reply asap..
Reards
Simple answer is no it wornt work if you try and flash with ODIN as the modems are different in size and wont flash properly. you can always download the rooted version and use a different modem.I am using the AT&T Skyrom with the VALJ1 modem and I havent had any issues yet.
tppickles said:
Simple answer is no it wornt work if you try and flash with ODIN as the modems are different in size and wont flash properly. you can always download the rooted version and use a different modem.I am using the AT&T Skyrom with the VALJ1 modem and I havent had any issues yet.
Click to expand...
Click to collapse
This combo leaves me with no Wi-Fi.
do you have any official like 4.3 without root?
guyz do you have any official like 4.3 stock rom like t889v for t889 but without root? just and .tar file to flash through odin without modem etc??
or do u knw release date of official 4.3 for t889?
Bronyr said:
This combo leaves me with no Wi-Fi.
Click to expand...
Click to collapse
You wont have WiFi without flashing the proper kernel. Check the OP there is instructions there.
Looks like the official is starting to drop ota for T-Mobile
Why is the right door always locked?

[Q] cannot root galaxy s3 i747 4.3

Sir I updated my galaxy s3 i747 with leaked firmware 4.3 with no knox.
It has unrooted my phone.
When I try to root my phone again.
I cannot root it.
And im having a battery problem.
It drains very fast.
Which ROM did you flash? You have the s3 from AT&T?
deepgrewal2 said:
Sir I updated my galaxy s3 i747 with leaked firmware 4.3 with no knox.
It has unrooted my phone.
When I try to root my phone again.
I cannot root it.
And im having a battery problem.
It drains very fast.
Click to expand...
Click to collapse
try cf-auto root first, that doesnt help
look for the official 4.3 stock rom for i747 flash it then root with cf-auto root, see if that works
sorry am too laxy to find it, am sure its somewhere on this threads :laugh:
winosxbuntu said:
try cf-auto root first, that doesnt help
look for the official 4.3 stock rom for i747 flash it then root with cf-auto root, see if that works
sorry am too laxy to find it, am sure its somewhere on this threads :laugh:
Click to expand...
Click to collapse
I've never seen an official AT&T stock 4.3 ROM. I know AT&T released 4.3 as an OTA update but don't think they released a full ROM.
deepgrewal2 said:
Sir I updated my galaxy s3 i747 with leaked firmware 4.3 with no knox.
It has unrooted my phone.
When I try to root my phone again.
I cannot root it.
And im having a battery problem.
It drains very fast.
Click to expand...
Click to collapse
audit13 said:
I've never seen an official AT&T stock 4.3 ROM. I know AT&T released 4.3 as an OTA update but don't think they released a full ROM.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2387423 http://forum.xda-developers.com/showpost.php?p=46804338
this two links provide 4.3 stock updates and developer @designgears pulled the official or the 4.3 update/firmware from AT&T, hope that can answer your question
winosxbuntu said:
http://forum.xda-developers.com/showthread.php?t=2387423 http://forum.xda-developers.com/showpost.php?p=46804338
this two links provide 4.3 stock updates and developer @designgears pulled the official or the 4.3 update/firmware from AT&T, hope that can answer your question
Click to expand...
Click to collapse
Aren't those are re-packaged ROMs rather than being a complete 4.3 ROM similar to Rogers/Bell/Telus ROMs? To install, you have to Odin back to a stock rom or TW-based ROM.
audit13 said:
Aren't those are re-packaged ROMs rather than being a complete 4.3 ROM similar to Rogers/Bell/Telus ROMs? To install, you have to Odin back to a stock rom or TW-based ROM.
Click to expand...
Click to collapse
am sure there is an official firmware from at&t and its hidden in this threads or somewhere on the net plus i was on a 4.1.2 stock, i dont like leaks just the official cleaned out so i did not have any problems with bootloaders/updating etc....... did not bother to use odin just flashed with CMW and everything worked
edit: devs need the official firmware from AT&T to work on , without it they have nothing (assuming you already know that)
winosxbuntu said:
am sure there is an official firmware from at&t and its hidden in this threads or somewhere on the net plus i was on a 4.1.2 stock, i dont like leaks just the official cleaned out so i did not have any problems with bootloaders/updating etc....... did not bother to use odin just flashed with CMW and everything worked
edit: devs need the official firmware from AT&T to work on , without it they have nothing (assuming you already know that)
Click to expand...
Click to collapse
AT&T did not release an official Odin tar for 4.1.2 or 4.3 it would be great if they did but they haven't and don't have any plans to do so.
Even without the tar files I think our developers have done a great job.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Agreed. The devs worked directly from the OTA. They never had the official firmware, as they all will tell you. You're not going to find it here or anywhere on the net.
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
winosxbuntu said:
http://forum.xda-developers.com/showthread.php?t=2387423 http://forum.xda-developers.com/showpost.php?p=46804338
this two links provide 4.3 stock updates and developer @designgears pulled the official or the 4.3 update/firmware from AT&T, hope that can answer your question
Click to expand...
Click to collapse
I understand the devs had to re-create the ROM. My point was that these aren't stock, but they are certainly good to have around
shortydoggg said:
Agreed. The devs worked directly from the OTA. They never had the official firmware, as they all will tell you. You're not going to find it here or anywhere on the net.
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
AT&T released official for 4.1.2 , dont know what happned with 4.3 but blame Samsung cuz after 4.1.1 S3's update, updates went down from there ........4.1.2 update was great, 4.3 being a WTF and no 4.2.2 .........but am optimistic that 4.4 is coming for S3's and never will CM/AOKP/PARANOID roms forsake the S3 it will have 5+ versions
winosxbuntu said:
AT&T released official for 4.1.2 , dont know what happned with 4.3 but blame Samsung cuz after 4.1.1 S3's update, updates went down from there ........4.1.2 update was great, 4.3 being a WTF and no 4.2.2 .........but am optimistic that 4.4 is coming for S3's and never will CM/AOKP/PARANOID roms forsake the S3 it will have 5+ versions
Click to expand...
Click to collapse
So since you allege AT&T released official firmware for 4.1.2(some other way than OTA) obviously my search skills aren't what they should be. Can you provide a link to backup your allegations?
Whether or not we get updates has little to do with Samsung and more to do with the service provider, and it is the service provider whom determines if we get an official copy released.
My thought is that AT&T is attempting to discourage us from customizing our devices. Some people have no business customizing anything and that can cause them to attempt to return their device under warranty. When the owner was the cause of the device failure that costs the provider money...
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
---------- Post added at 08:07 PM ---------- Previous post was at 07:50 PM ----------
Btw I want to apologize to the OP here is a link to some roms that are pre rooted they're very close to stock with only minor differences mostly in its capabilities and some are debloated. These will get you rooted for sure, remove knox and should do what you want. I like the one from loserskater. This link below works only on the AT&T SGH-I747.
http://forum.xda-developers.com/showthread.php?t=2540998
once again I apologize for bickering in your thread while not even staying on topic.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

[Q] Can I put T-mobile firmware on an unlocked SGH-M919V ?

I have an unlocked Nextel version of the SGH-M919V Baseband version M919VWXUFNE2
Can I put the stock T-mobile firmware this phone?
If so what is the procedure, I was recently up dated to 4.4.2
I need the WiFi calling feature, at my home reception is very poor so really need it for voice.
TRy THIS
nyjetshead said:
I have an unlocked Nextel version of the SGH-M919V Baseband version M919VWXUFNE2
Can I put the stock T-mobile firmware this phone?
If so what is the procedure, I was recently up dated to 4.4.2
I need the WiFi calling feature, at my home reception is very poor so really need it for voice.
Click to expand...
Click to collapse
TRy this app is work fine
https://play.google.com/store/apps/details?id=com.snrblabs.grooveip&hl=en
https://play.google.com/store/apps/details?id=com.gvoip&hl=en
nyjetshead said:
I have an unlocked Nextel version of the SGH-M919V Baseband version M919VWXUFNE2
Can I put the stock T-mobile firmware this phone?
If so what is the procedure, I was recently up dated to 4.4.2
I need the WiFi calling feature, at my home reception is very poor so really need it for voice.
Click to expand...
Click to collapse
SGH-M919 is the T-Mobile variant, so it should be no problem.
The easiest way to go back to stock is to use KIES, but that will revert you back to V.
You can download stock and flash with ODIN. As long as it is stock T-Mobile and you have a T-Mobile account, WiFi calling will work fine.
mhannigan said:
SGH-M919 is the T-Mobile variant, so it should be no problem.
The easiest way to go back to stock is to use KIES, but that will revert you back to V.
You can download stock and flash with ODIN. As long as it is stock T-Mobile and you have a T-Mobile account, WiFi calling will work fine.
Click to expand...
Click to collapse
I have a T-mobile account so with ODIN I can flash the current version directly and it will work... That's good news
Where do I find the latest version?
Is there anything I need to do specifically since I have Nextel firmware in the phone.
nyjetshead said:
I have a T-mobile account so with ODIN I can flash the current version directly and it will work... That's good news
Where do I find the latest version?
Is there anything I need to do specifically since I have Nextel firmware in the phone.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2267895
Sent from my SM-T700 using Tapatalk
mhannigan said:
http://forum.xda-developers.com/showthread.php?t=2267895
Sent from my SM-T700 using Tapatalk
Click to expand...
Click to collapse
Thanks
I will download the firmware and give it a try
nyjetshead said:
Thanks
I will download the firmware and give it a try
Click to expand...
Click to collapse
OK I tried ODIN 3.09 with firmware version M919UVUFNB4 which is 4.4.2 and it failed with a bootloader permission error
I already have 4.4.2 on the phone but its the Nextel Firmware
I read something about installing modem.bin is that my problem?
nyjetshead said:
OK I tried ODIN 3.09 with firmware version M919UVUFNB4 which is 4.4.2 and it failed with a bootloader permission error
I already have 4.4.2 on the phone but its the Nextel Firmware
I read something about installing modem.bin is that my problem?
Click to expand...
Click to collapse
No, the modem wouldn't be your problem. Since you are already updated to the official 4.4.2, you now have KNOX to worry about. If you don't care about setting the 0x1 flag, your best bet would more than likely be to flash a custom recovery and a modded/stock ROM specifically for the M919 from the Android Development section. You keep mentioning that you have a Nextel device... just to confirm, you have a T-Mobile SIM, correct? Because if not, WiFi calling won't work for you anyway.
Yup, I have a T-mobile account and the phone has a T-mobile SIM in it
I don't think that KNOX flag is an issue as it is an unlocked Non T-mobile phone.
If I have an issue with the phone at all T-mobile is not going to support it.
The model phone I have apparently is exactly the same as the T-mobile branded phone, when I registered it with Samsung they identify it as a T-mobile phone.
I guess I could just get a 1900MHZ repeater and call it a day as well.
nyjetshead said:
I guess I could just get a 1900MHZ repeater and call it a day as well.
Click to expand...
Click to collapse
You could, I guess... but I would be willing to bet that it would be a lot cheaper to just get WiFi calling working
Like I said, you'll probably have to forget going the Odin route and use a custom recovery and modded/stock T-Mobile TouchWiz ROM.
First of All I want to say sorry for poting this query in Another thread, really don't want to create another thread Can I install ROMs from Tmobile section to my i9505 (international Variant)? There're loads of great ROMs here wanna try some of them..but bit afraid to brick the device, even though both devices shares same hardware...just want to confirm from you people
lordcheeto03 said:
You could, I guess... but I would be willing to bet that it would be a lot cheaper to just get WiFi calling working
Like I said, you'll probably have to forget going the Odin route and use a custom recovery and modded/stock T-Mobile TouchWiz ROM.
Click to expand...
Click to collapse
T-mobile TouchWiz ROM.. Is that stable?
I'm not interested in constantly flashing the phone to get the bug fixes ...
I'd give a stable ROM a try so is that the one to go with?
nyjetshead said:
T-mobile TouchWiz ROM.. Is that stable?
I'm not interested in constantly flashing the phone to get the bug fixes ...
I'd give a stable ROM a try so is that the one to go with?
Click to expand...
Click to collapse
Yeah, most every ROM posted in the development section is stable, TouchWiz or AOSP. Just make sure you read the OP to confirm that whichever ROM has WiFi calling included as there are TW ROMs which have been ported to our device from other carrier's S4s.... Only those specifically for the M919 will have WiFi calling and it will be specified in the OP. I'm not going to recommend which ROM to flash, but from someone who's tried them all... you can't make a bad decision whatever you choose.
---------- Post added at 03:52 PM ---------- Previous post was at 03:49 PM ----------
Alipk52 said:
First of All I want to say sorry for poting this query in Another thread, really don't want to create another thread Can I install ROMs from Tmobile section to my i9505 (international Variant)? There're loads of great ROMs here wanna try some of them..but bit afraid to brick the device, even though both devices shares same hardware...just want to confirm from you people
Click to expand...
Click to collapse
Yes, you can. The only S4 ROMs you should stay away from are those made for the i9500 and non-standard S4's (i.e. S4 mini, S4 Active, etc). Any other variant of the standard S4 (including the i9505G) is good to go; just use a kernel for your specific device. On that note though, the i9505 and M919 kernels are interchangeable, so there's no need to follow that protocol when using our ROMs for your device and vice versa.
lordcheeto03 said:
---------- Post added at 03:52 PM ---------- Previous post was at 03:49 PM ----------
Yes, you can. The only S4 ROMs you should stay away from are those made for the i9500 and non-standard S4's (i.e. S4 mini, S4 Active, etc). Any other variant of the standard S4 (including the i9505G) is good to go; just use a kernel for your specific device. On that note though, the i9505 and M919 kernels are interchangeable, so there's no need to follow that protocol when using our ROMs for your device and vice versa.
Click to expand...
Click to collapse
Thanks bro for your reply, that's great to know and gained extra 150+ ROMs thread as well really good to use great ROMS in this section
After doing some research my question:
The reason I can't use this firmware is due to the fact that my current baseband is higher than the one I was attempting to flash.
I have FNE2 and was trying to flash FNB4?
Thoughts?
Still looking to do this did anything change here? Has anyone successfully with flashing this with the stock ROM?
I'm a T- Mobile customer
Thanks
I have an unlocked Nextel version 4.42 of the SGH-M919Vzlmnx Baseband / modem / PDA version M919VWXUFNE2

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