Downgrade from 4.4.2 to 4.2.2 - T-Mobile Samsung Galaxy S 4

Hello, I have 4.4.2 m919
Baseband version: nb4
I want to downgrade to 4.2.2 and then unlock this device. Can anyone help me with some instructions? Thanks.

tsotne90 said:
Hello, I have 4.4.2 m919
Baseband version: nb4
I want to downgrade to 4.2.2 and then unlock this device. Can anyone help me with some instructions? Thanks.
Click to expand...
Click to collapse
I'm sorry to tell you this but if you are on the stock nb4 you cannot downgrade. Trying to downgrade will brick your phone. Did you take the OTA 4.4? How did you get 4.4?
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mrzhadow said:
I'm sorry to tell you this but if you are on the stock nb4 you cannot downgrade. Trying to downgrade will brick your phone. Did you take the OTA 4.4? How did you get 4.4?
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Thanks for response. I don;t know, I bought it with 4.4.2 it was stock. So, I have no chance to sim unlock this device?

tsotne90 said:
Thanks for response. I don;t know, I bought it with 4.4.2 it was stock. So, I have no chance to sim unlock this device?
Click to expand...
Click to collapse
I'm not sure if you can unlock with this method if you are on 4.4 it doesn't say. It only says you need to be on stock and its confirmed working.
http://forum.xda-developers.com/showthread.php?t=2283068
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---------- Post added at 11:46 AM ---------- Previous post was at 11:42 AM ----------
Its probably for MDL only. I will look into it.
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---------- Post added at 12:12 PM ---------- Previous post was at 11:46 AM ----------
Have you called T-Mobile and asked them how to Sim unlock?
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mrzhadow said:
I'm not sure if you can unlock with this method if you are on 4.4 it doesn't say. It only says you need to be on stock and its confirmed working.
http://forum.xda-developers.com/showthread.php?t=2283068
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---------- Post added at 11:46 AM ---------- Previous post was at 11:42 AM ----------
Its probably for MDL only. I will look into it.
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---------- Post added at 12:12 PM ---------- Previous post was at 11:46 AM ----------
Have you called T-Mobile and asked them how to Sim unlock?
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Click to collapse
Yes, unfortunately this method doesn;t work for my device..
No, I haven't contacted them, I'm overseas..

I don't think there is a way to unlock NB4 at the moment.. Only thing you can do is wait, or buy an unlock code
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serio22 said:
I don't think there is a way to unlock NB4 at the moment.. Only thing you can do is wait, or buy an unlock code
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Agreed
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mrzhadow said:
I'm sorry to tell you this but if you are on the stock nb4 you cannot downgrade. Trying to downgrade will brick your phone. Did you take the OTA 4.4? How did you get 4.4?
Sent from my SGH-M919 using XDA Free mobile app
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Click to collapse
serio22 said:
I don't think there is a way to unlock NB4 at the moment.. Only thing you can do is wait, or buy an unlock code
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This is technically incorrect information. While one may not officially be able to downgrade (first of all using Odin to flash the mdl tar file will not brick your device, simply reports a failed status) you can still root the device install a custom recovery and flash any of the 4.2.2 ROMs found in the development section.
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elesbb said:
This is technically incorrect information. While one may not officially be able to downgrade (first of all using Odin to flash the mdl tar file will not brick your device, simply reports a failed status) you can still root the device install a custom recovery and flash any of the 4.2.2 ROMs found in the development section.
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Click to collapse
Yes you can flash 4.2 jelly bean custom ROMs but that doesn't help his problem. He needs to sim unlock and at the moment we only have 1 guide for stock 4.2 and nothing newer.
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mrzhadow said:
Yes you can flash 4.2 jelly bean custom ROMs but that doesn't help his problem. He needs to sim unlock and at the moment we only have 1 guide for stock 4.2 and nothing newer.
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Click to collapse
you can still SIM unlock if you flash a custom 4.2.2 ROM. Also, you can simply flash the MK2 modem through Odin (there is a thread explaining how to SIM unlock on NB4 firmware) and then use the commands from there.

elesbb said:
you can still SIM unlock if you flash a custom 4.2.2 ROM. Also, you can simply flash the MK2 modem through Odin (there is a thread explaining how to SIM unlock on NB4 firmware) and then use the commands from there.
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Can you give me a link?

http://forum.xda-developers.com/showthread.php?t=2654058
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elesbb said:
you can still SIM unlock if you flash a custom 4.2.2 ROM. Also, you can simply flash the MK2 modem through Odin (there is a thread explaining how to SIM unlock on NB4 firmware) and then use the commands from there.
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Thank you for clarifying that. I have been looking pretty hard and can't seem to find a thread with instructions. Would you be kind and provide a link so we can benefit from this information? Than you very much! Your knowledge is greatly appreciated!!
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---------- Post added at 12:45 PM ---------- Previous post was at 12:20 PM ----------
Android_Monsters said:
http://forum.xda-developers.com/showthread.php?t=2654058
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Click to collapse
Good find but it's not confirmed working on 4.4. It barely confirmed working at all. I much rather keep my phone working than to have a $600 paper weight.
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Related

help unlcoking galaxy note 2 LTE?

Is there a way to unlocking the LTE Galaxy note 2 GT_N7105
I have been looking for ours now and i cant find a solution. I am currently locked to three ( UK network) and i am desperately trying to unlock it for my EE sim. I cant ring three cause of the sim and i dont want to pay ( shouldnt have to since the other note 2's can be done for free) PLEASE HELP!!!!!
Try this
https://play.google.com/store/apps/details?id=com.spocky.galaxsimunlock
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fach1708 said:
Try this
https://play.google.com/store/apps/details?id=com.spocky.galaxsimunlock
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Click to expand...
Click to collapse
Its not supported apparently. Thats a bummer
Downgrade to 4.1.1 and search for free note 2 unlock instructions in the forum
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---------- Post added at 08:03 PM ---------- Previous post was at 08:02 PM ----------
I have an n7105 and I used this method to unlock mine from ee to three lol
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thedadio said:
Downgrade to 4.1.1 and search for free note 2 unlock instructions in the forum
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---------- Post added at 08:03 PM ---------- Previous post was at 08:02 PM ----------
I have an n7105 and I used this method to unlock mine from ee to three lol
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Click to collapse
i cant downgrade. i cant find a rom for version 4.1.1
SAMVREMIX said:
i cant downgrade. i cant find a rom for version 4.1.1
Click to expand...
Click to collapse
tons of 4.1.1 rom but be care ful as they are prone to sds and i am not sure if it can be unlock that way http://forum.xda-developers.com/showthread.php?t=2032849
and instruction to do so http://forum.xda-developers.com/showthread.php?t=2014982
but it can be unlock from here http://www.sammobile.com/unlock/ 15euros if its suits you
shhbz said:
tons of 4.1.1 rom but be care ful as they are prone to sds and i am not sure if it can be unlock that way http://forum.xda-developers.com/showthread.php?t=2032849
and instruction to do so http://forum.xda-developers.com/showthread.php?t=2014982
but it can be unlock from here http://www.sammobile.com/unlock/ 15euros if its suits you
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Click to collapse
I unlocked it in the end. I installed EE's varient of the 4.1.1 rom using odin unlocked it via the hidden menu then updated.
SAMVREMIX said:
I unlocked it in the end. I installed EE's varient of the 4.1.1 rom using odin unlocked it via the hidden menu then updated.
Click to expand...
Click to collapse
great :good: u did the right thing better keep efs safe

SGH-M919 can't establish LTE data

Hello, anyone
I have a T-mobile M919. I tried 2 TW ROMs, it gets LTE signal but can't establish data connection. Also,all signal drops when screen off. I also tried to reflash the modem, it didn't work. When it's on GE ROMs, it works fine.
Previously, I flashed some TW rom, it worked fine.
Any thought? Thanks a lot!
Are you on 4.2.2 bootloader with 4.3 MK2 modem or are you simply on 4.3 MK2? Sounds like you need to flash the 4.3 MK2 modem through Odin.
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---------- Post added at 06:26 AM ---------- Previous post was at 06:26 AM ----------
Or check your APN settings, shouls be fast.t-mobile.com.
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xdapowerapps said:
Are you on 4.2.2 bootloader with 4.3 MK2 modem or are you simply on 4.3 MK2? Sounds like you need to flash the 4.3 MK2 modem through Odin.
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---------- Post added at 06:26 AM ---------- Previous post was at 06:26 AM ----------
Or check your APN settings, shouls be fast.t-mobile.com.
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Click to collapse
I am using Baseband version of M919UVUAMDL, how do I find out the bootloader version? Thanks.
matth3w said:
I am using Baseband version of M919UVUAMDL, how do I find out the bootloader version? Thanks.
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Click to collapse
If you're on MDL baseband your bootloader should be 4.2 MDL version. Just update your modem only to mk2.
☞ Sent from here☜???
matth3w said:
I am using Baseband version of M919UVUAMDL, how do I find out the bootloader version? Thanks.
Click to expand...
Click to collapse
You definitely need to update your nodem. Just Odin flash the 4.3 MK2 modem.bin file and you won't have this problem anymore. Search for mk2 modem.bin, lots of forums on xda have them.
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[Q] KitKat Help please :)

I'm Rooted on 4.3 with CWM now I wanna go to 4.4.2 with the new modem so what the best way for me to do this without loosing anything? & with that unlimited tethering mod do I just flash that?
I'd flash the modem this way: http://forum.xda-developers.com/showthread.php?t=2678774
Then pick a 4.4.2 ROM from the developers section.
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Android_Monsters said:
I'd flash the modem this way: http://forum.xda-developers.com/showthread.php?t=2678774
Then pick a 4.4.2 ROM from the developers section.
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Click to collapse
But I'm on the 4.3 Bootloader so it won't work for me
Which part? The flashing the modem part?
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---------- Post added at 09:14 PM ---------- Previous post was at 09:11 PM ----------
On page one of the modem thread somebody says:
"This can also be flashed if you are running a non-stock kitkat rom with the MK2 bootloader and want to try your luck with the new kitkat modem (gsm). Unless I'm missing something."
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---------- Post added at 09:16 PM ---------- Previous post was at 09:14 PM ----------
So it seems like it's worth a try to flash the new modem.
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Android_Monsters said:
Which part? The flashing the modem part?
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---------- Post added at 09:14 PM ---------- Previous post was at 09:11 PM ----------
On page one of the modem thread somebody says:
"This can also be flashed if you are running a non-stock kitkat rom with the MK2 bootloader and want to try your luck with the new kitkat modem (gsm). Unless I'm missing something."
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---------- Post added at 09:16 PM ---------- Previous post was at 09:14 PM ----------
So it seems like it's worth a try to flash the new modem.
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Click to collapse
But I'm not running a KitKat rom.... I'm trying to get stock 4.4.2 with CWM and root
inick73376 said:
But I'm not running a KitKat rom.... I'm trying to get stock 4.4.2 with CWM and root
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Click to collapse
4.4.2 is KitKat
Postman68 said:
4.4.2 is KitKat
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Click to collapse
Ok? but i'm not running KitKat....
Have you considered using Odin to flash the stock 4.3 image, and then taking the update and then rooting etc.?
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Android_Monsters said:
Have you considered using Odin to flash the stock 4.3 image, and then taking the update and then rooting etc.?
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Click to collapse
that is what I did so thanks Mods can close this thread

Looking for a flashable stock rom

Anyone show me or tell me if there is a flashable stock att ROM i can use ?
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This site has all the released official roms:
http://www.samfirmware.com/
---------- Post added at 10:58 AM ---------- Previous post was at 10:57 AM ----------
Organized by device and carrier. But the latest official rom has a very unfriendly bootloader and security system. Think twice amigo.
JReeher said:
Anyone show me or tell me if there is a flashable stock att ROM i can use ?
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Click to expand...
Click to collapse
Yeah I don't wanna lose root and my unlocked bootloader I forgot to state that I'm looking for a rooted version of the stock rom
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JReeher said:
Yeah I don't wanna lose root and my unlocked bootloader I forgot to state that I'm looking for a rooted version of the stock rom
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Click to expand...
Click to collapse
Sounds like what you are looking for is here
http://forum.xda-developers.com/showthread.php?t=2589891
And another here
http://forum.xda-developers.com/showthread.php?t=2659569
Exactly what I'm looking for thank youb
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[Q] Unrooting Note 2 with 4.3 to upgrade to 4.4

I have an At& t note 2 that has been rooted and currently running baseband I317ucubmk6. I am unable to download ota the new kitkat firmware. I believe it is because of the phone being rooted and?or possibly because of bootloader not allowing downgrade of firmware. Not really sure. Can anyone help me unroot this ? return to stock firmware so that i may upgrade or how to to get the kitkat. on my phone? Thanks in advance
Use this method step by step and it will work did for me
http://forum.xda-developers.com/showthread.php?t=2618447
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---------- Post added at 11:30 PM ---------- Previous post was at 11:28 PM ----------
Basically your gonna go back to 4.1.1 then ota to 4.1.2 and it will crash then pull the battery and go back to download mode and flash the mk6 bootloader and it will boot then just ota again and you should be good to get kitkat should be about 800mb when you get the update
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Thanx
terpin32 said:
Use this method step by step and it will work did for me
http://forum.xda-developers.com/showthread.php?t=2618447
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---------- Post added at 11:30 PM ---------- Previous post was at 11:28 PM ----------
Basically your gonna go back to 4.1.1 then ota to 4.1.2 and it will crash then pull the battery and go back to download mode and flash the mk6 bootloader and it will boot then just ota again and you should be good to get kitkat should be about 800mb when you get the update
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Click to collapse
I'll give a go and let you know how it goed. Thankx
blknsmth said:
I'll give a go and let you know how it goed. Thankx
Click to expand...
Click to collapse
worked perfectly!!!!! thanks
blknsmth said:
worked perfectly!!!!! thanks
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Awesome np man
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