Will I lose unlock if I upgrade? - AT&T Samsung Galaxy Note II

I'm running this phone on the tmobile network after I downgraded from 4.3 to 4.1.1 to unlock the phone. That worked perfectly and I'm now in tmobile with LTE and everything. My question: if I upgrade back to 4.3 will that lock the phone once again? I wouldn't want to go through the process again if it meant I would be locked from using my phone. I ask because of security issues with 4.1.1
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No.

rangercaptain said:
No.
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Awesome, really appreciate it.
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Related

quick question!

what's our newest firmware or bootloader? I'm seeing MJ5 in TMO Dev Threads for ROMs and to my understanding that was only for the international phone. I used to be able to flash all the i9505 ROMs but now with 4.3 I've been told not to. Data goes in and out unless you have MJ5 and I really want to run the i9505 4.3 ROMs. It even increases WiFi and data signals too significantly.
I think I have old software since I haven't updated bootloader or anything since march.
anyone care to share some light here?
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Not quite sure what you're looking for. But this is part of my about system page
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Android_Monsters said:
Not quite sure what you're looking for. But this is part of my about system page
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what is the newest firmware and bootloader? don't I have to have it for 4.3
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Hardcore69er said:
what's our newest firmware or bootloader? I'm seeing MJ5 in TMO Dev Threads for ROMs and to my understanding that was only for the international phone. I used to be able to flash all the i9505 ROMs but now with 4.3 I've been told not to. Data goes in and out unless you have MJ5 and I really want to run the i9505 4.3 ROMs. It even increases WiFi and data signals too significantly.
I think I have old software since I haven't updated bootloader or anything since march.
anyone care to share some light here?
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Click to expand...
Click to collapse
MDL is the latest official firmware / bootloader for the T-Mobile S4.
MJ5 is indeed an International firmware, but as you said, data goes in and out when the phone goes to sleep.

Is there a way to unlock the gs4 on 4.3?

Hello there, I wanted to know if there was a way to unlock the device without purchase on 4.3
thank you
If your phone is paid off and has been activated for at least 90 days, just walk into tmo and say hey give me my code.
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ShinySide said:
If your phone is paid off and has been activated for at least 90 days, just walk into tmo and say hey give me my code.
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does it matter if you're using a custom kernel or anything when using the code?
HTCMDA said:
does it matter if you're using a custom kernel or anything when using the code?
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No idea. Would have to be on stock rom to access the menus
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ShinySide said:
No idea. Would have to be on stock rom to access the menus
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i have a stock deodexed rom with a custom kernel. I paid full price for my phone... just curious.
Without root?
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Sim unlock s3 on 4.3

Ok. So I tried to sim unlock s3 on t mobile . T mo gave me code. Put in old cetennial then an old att sim and says unlock unsuccesful. Theysent another phone and new code. Same problem. Anychance phone needs an active sim for unlock code to work? Tired of readi g andsearchi g to no avail.
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sim lock 4.3
You only have two options... Option 1, You wait until kikkat 4.4 become available for upgrade then unlock the phone with same code. Or option 2, you find the stock rom that came with the the phone which is the ice cream 4.04. Then use odin to downgrade and then you can use the same code.
From all my reading. I was under impression you cant down grade with odin?
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mike102871 said:
From all my reading. I was under impression you cant down grade with odin?
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You can't if your device has the official 4.3 update, like ota or if it was done through kies or Odin
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So you think maybe code is correct and4.3 ota broke ability to unlock by code?
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mike102871 said:
So you think maybe code is correct and4.3 ota broke ability to unlock by code?
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Its possible it could've been broken by mistake, some people have had the same issues with Samsung devices on 4.3, try the new 4.3 update and see if it helps
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Stilk no go with the latest update
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[Q] KitKat Upgrade

If I switch to TMobile now will I still get the KitKat update from ATT when it is released? Using ATT Note 2 unlocked.
XT444 said:
If I switch to TMobile now will I still get the KitKat update from ATT when it is released? Using ATT Note 2 unlocked.
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Negative..
The carrier dependent information will be different when using the ATT device on T-Mobile....
You'll need the MK7 modem to get the device working...along with the t-mobile sim card...
ATT will not recognize the device...g
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Thanks. Once it is available from samsung can I use Kies to push the update?
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Wait. Are you saying he would have to flash the t mobile modem too? In order to use phone on t mobile?
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pckarma112 said:
Wait. Are you saying he would have to flash the t mobile modem too? In order to use phone on t mobile?
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I'm on t mobile now and did not change anything. Using the MK6 modem that came with the 4.3 ATT upgrade a while back.
Only functionality that I lost was hotspot that is blocked by some ATT system files.
gregsarg said:
Negative..
The carrier dependent information will be different when using the ATT device on T-Mobile....
You'll need the MK7 modem to get the device working...along with the t-mobile sim card...
ATT will not recognize the device...g
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@gregsarg. I thought if I flashed T-Mobile modem on i317 it would mess it up...?
mexigga said:
@gregsarg. I thought if I flashed T-Mobile modem on i317 it would mess it up...?
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No issues if you are on the tmo network...
Many users have ATT devices using mk7 modems for tmo...
It's the only way to get full device function...
But if an ATT modem is working fine for you...there is no problem leaving it if you prefer...g
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gregsarg said:
No issues if you are on the tmo network...
Many users have ATT devices using mk7 modems for tmo...
It's the only way to get full device function...
But if an ATT modem is working fine for you...there is no problem leaving it if you prefer...g
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I see. I'm gonna give it a try then. Always been hesitant due to all the warnings about bootloops from @Bajanman and others...
mexigga said:
I see. I'm gonna give it a try then. Always been hesitant due to all the warnings about bootloops from @Bajanman and others...
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Flashed mk7. No signal. Baseband unknown. That sucks
Back to mk6 and no LTE.
mexigga said:
Flashed mk7. No signal. Baseband unknown. That sucks
Back to mk6 and no LTE.
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Curious. Did flashing mk6 back fix it?
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pckarma112 said:
Curious. Did flashing mk6 back fix it?
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MK6 fixed signal, yes.

Porting roms

Hey guys I was wondering if one of you nice devs can tell me how to port roms from the t-mobile n3 to att n3. I have a basic idea on how it's done I just want to know from a person that has successfully ported one to att n3. Thanks in advance.
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lildoggs said:
Hey guys I was wondering if one of you nice devs can tell me how to port roms from the t-mobile n3 to att n3. I have a basic idea on how it's done I just want to know from a person that has successfully ported one to att n3. Thanks in advance.
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I have never ported the roms... I do think if you use any of my roms or from other dev it should just work without any issues, all u need to do is just check ur apn settings to make sure everything is correct so u can get data and mms working. so just make a backup first, then flash the rom..
mdiaz33685 said:
I have never ported the roms... I do think if you use any of my roms or from other dev it should just work without any issues, all u need to do is just check ur apn settings to make sure everything is correct so u can get data and mms working. so just make a backup first, then flash the rom..
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The problem is I like the t mobile roms. But they won't work on the at&t n3. Because of the locked bootloader and kernel. Otherwise I can just flash it without any issues.
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lildoggs said:
The problem is I like the t mobile roms. But they won't work on the at&t n3. Because of the locked bootloader and kernel. Otherwise I can just flash it without any issues.
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SafeStrap only for your ATT device. Even if you port over successful, you will always have a locked bootloader. Sorry
TheAxman said:
SafeStrap only for your ATT device. Even if you port over successful, you will always have a locked bootloader. Sorry
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How about if I change the bootloader and kernel in the rom to the nc2 at&t version. Do you think that might work and I will get a fully functioning port?
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lildoggs said:
How about if I change the bootloader and kernel in the rom to the nc2 at&t version. Do you think that might work and I will get a fully functioning port?
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You will probably brick, not wise.
TheAxman said:
You will probably brick, not wise.
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Thanks for your help man. Appreciate it.
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