[Q] Unlock SPH-L720 Baseband L720VPUFNG2? - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

Has anyone successfully unlocked the SPH-L720 from Sprint with this newest firmware? I found instructions on another thread for unlocking the L720, but they are for Android 4.2.2 and do not work with 4.4.2. When I attempted to downgrade the modem, it bricked the phone. I've managed to get the correct firmware re-installed and un-brick the phone, but now I'm back to square one.
The phone is rooted, I just need to carrier unlock it from Sprint and remove the CDMA lock so that I can use a GSM sim (attempting to use the phone with NET10 which uses T-Mobile/AT&T compatible sims).

I'm having the same issue here. Let me know if you got through. I want to use my Galaxy s4 outside the USA on a GSM network.

same issue
I need to know also my contract is about over will sprint really unlock it for me I am rooted or can I go to a MDC baseband version and do the unlock codes....... please help ty
---------- Post added at 02:48 AM ---------- Previous post was at 01:59 AM ----------
Howiewowie said:
I need to know also my contract is about over will sprint really unlock it for me I am rooted or can I go to a MDC baseband version and do the unlock codes....... please help ty
Click to expand...
Click to collapse
no problem this told me what to do http://forum.xda-developers.com/showthread.php?t=2415587 soon as I get away from my contract I will be trying thx

Bumping this to see if anyone has figured this out?
I've got a GoogleFi data only card and would love to get my S4 back online but it seems I'm SOL since I'm on L720VPUFNG2.
Someone on reddit said they figured it out but hadn't provided the details (nor replied to PMs), I don't want to brick my phone as it's still an excellent backup.
Is unlocking an L720 on NG2 possible?

Please I need this too

Have you guys tried the unlocking thread in the General section?
http://forum.xda-developers.com/showthread.php?t=2530610
Or this one?
http://forum.xda-developers.com/showthread.php?t=2415587
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Related

[Q] Help Needed - Note 3 won't select Network

Hi Guys,
I just got my note 3 this week and I was thinking it'll be easy to have custom roms like my S2.
Totally wrong about that !
I managed to install custom roms after following instructions - X-Note build 15.0 N9005-ND5 which was to install Poland's firmware and then port over to the custom firmware... It booted up but i have no Network Coverage which requires me to insert a sim card which is already there........
I then spent countless hours trying to get it back and even went back to stock rom... but to no avail
Super frustrated and confused why has this happened..
Please help :crying::crying:
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Got it to work
HI GUYS [email protected]!!!
I JUST GOT IT TO WORK !!
I flashed my modem from here !
http://forum.xda-developers.com/showthread.php?t=2475714&page=23
SM-N9005XXUBMJ1_MODEM.tar
Hope this helps anybody who has the same problem
witbliz said:
Hi Guys,
I just got my note 3 this week and I was thinking it'll be easy to have custom roms like my S2.
Totally wrong about that !
I managed to install custom roms after following instructions - X-Note build 15.0 N9005-ND5 which was to install Poland's firmware and then port over to the custom firmware... It booted up but i have no Network Coverage which requires me to insert a sim card which is already there........
I then spent countless hours trying to get it back and even went back to stock rom... but to no avail
Super frustrated and confused why has this happened..
Please help :crying::crying:
View attachment 2772977
Click to expand...
Click to collapse
What about IMEI number? Type *#06# and see if it shows the IMEI number. If not your IMEI is corrupt, Do not give up just.
---------- Post added at 07:34 PM ---------- Previous post was at 07:29 PM ----------
witbliz said:
HI GUYS [email protected]!!!
I JUST GOT IT TO WORK !!
I flashed my modem from here !
http://forum.xda-developers.com/showthread.php?t=2475714&page=23
SM-N9005XXUBMJ1_MODEM.tar
Hope this helps anybody who has the same problem
Click to expand...
Click to collapse
Good to here you got it working. But henceforth always remember to backup your EFS partition before flashing any rom. Though some Roms have the built in feature there are other tools available here on forum.

[Q] stock firmware w/ modem for L720T

hi i have a sprint s4 l720T on 4.4.2 kk stock i need a modem to flash on it a co worker messed it up and asked me to fix it, where might i aquire one or just a full stock tar?
Android Version: 4.4.2 kk
Build Number: KOT49H.L720TVPUBBOA3
rooted?: yes (kinda?)
Knox enabled/disabled: enabled (supersu doesnt seem to disable it)
any more info please let me know, im just having a hard time finding anything about BOA3 firmware
any help is appreciated
deathblade said:
hi i have a sprint s4 l720T on 4.4.2 kk stock i need a modem to flash on it a co worker messed it up and asked me to fix it, where might i aquire one or just a full stock tar?
Android Version: 4.4.2 kk
Build Number: KOT49H.L720TVPUBBOA3
rooted?: yes (kinda?)
Knox enabled/disabled: enabled (supersu doesnt seem to disable it)
any more info please let me know, im just having a hard time finding anything about BOA3 firmware
any help is appreciated
Click to expand...
Click to collapse
That's because it's referred to just by OA3. Why does he need a modem?
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He did some stuff, he is new to this kind of stuff idk what he did but now it won't read any cell service or anything though WiFi works I was hoping to find a complete stock firmware packaged tar to just overwrite everything
deathblade said:
He did some stuff, he is new to this kind of stuff idk what he did but now it won't read any cell service or anything though WiFi works I was hoping to find a complete stock firmware packaged tar to just overwrite everything
Click to expand...
Click to collapse
Here are the stock ROMs- http://forum.xda-developers.com/showthread.php?p=59310363
I would try www.sammobile.com for the firmware. I downloaded it from there before I had to return mine.

[Q] Need some information about I9502 (Samsung galaxy S4 Dual)

I had purchased an I9502 through olx.in, last week.
Second hand.
Due to rare users, there is no dedicated thread on XDA for my device
Now, many questions arises.
I had updated to official lollipop (5.0.1), by SAMMOBILE's official ROM. After upgrading, my second SIM cant connect to network. So I revert back it to KK (4.4.2). Still the problem persists !!!!! . I couldn't use it as a dual sim phone Is PDA and CSC version is important while flashing? or we could install any PDA/CSC rom version on samsung phones? I don't know the original ROM so, I had downloaded all firmwares available at sammobile and tested. only 2 of them managed to register my SIM(first) on network. Is it a hardware issue? or by a wrong ROM ? anyway now my mobile admitted at hospital and specialized doctors have been studying his disease
Is there anyone using dual SIM without any errors?
The PDA and CSC are vital to ensure you get the right regional variant for your device. The only exception is if the phone is unlocked for use on another carrier, in which case you can use a ROM from any region. Where you have the dual SIM version however, you only have one region available to you, but with multiple Android versions. The firmware here is the latest for your device. Do a factory reset before flashing through Odin.
I am totally disappointed.
My technician said that it had lost IMEI !
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What will I do?
Is there anyway to recover its IMEI?
I had followed all guidelines available through search.
But, I couldn't...
Please help me on this....
Flash just the modem through Odin. You can extract it from the firmware download. Sometimes the modem needs to be flashed twice before everything functions correctly.
Other than that, I'm not aware of anything else software-wise that can be done. You'll need to take the phone to Samsung themselves and have them look at it.
spknair
Try this thread
http://forum.xda-developers.com/galaxy-s2/general/guide-recover-imei-9-steps-t1264021
I had the same situation and it worked

Questions About Basebands, Mobile Networks and Unlocked Devices

I have a few concerns to address. I recently bought the Galaxy i9505 (or in my case, the Sprint SPH-L720T version). The device comes unlocked with stock firmware/software, Lollipop 5.0.1 baseband OH2.
Now I will try to make this as clear as possible. We don't have the Sprint network here, I'm on Vodafone. I just flashed an official ROM from Sammobile with a different baseband version (this one) because I can't find the version that my phone came pre-installed with. I upgraded to address the StageFright and widgets app draw issue that was on the stock ROM.
Now my question is: by flashing a different baseband version, will I lose the ability to have an unlocked device and incur roaming charges on my network, or is the unlocked to work on multiple networks feature on a firmware level so I don't have to worry about it?
Thanks.
Grumpy Cat said:
I have a few concerns to address. I recently bought the Galaxy i9505 (or in my case, the Sprint SPH-L720T version). The device comes unlocked with stock firmware/software, Lollipop 5.0.1 baseband OH2.
Now I will try to make this as clear as possible. We don't have the Sprint network here, I'm on Vodafone. I just flashed an official ROM from Sammobile with a different baseband version (this one) because I can't find the version that my phone came pre-installed with. I upgraded to address the StageFright and widgets app draw issue that was on the stock ROM.
Now my question is: by flashing a different baseband version, will I lose the ability to have an unlocked device and incur roaming charges on my network, or is the unlocked to work on multiple networks feature on a firmware level so I don't have to worry about it?
Thanks.
Click to expand...
Click to collapse
You will lose your domestic/international unlock of you upgrade the Baseband unless it was actually unlocked by Sprint.
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bilgerryan said:
You will lose your domestic/international unlock of you upgrade the Baseband unless it was actually unlocked by Sprint.
Click to expand...
Click to collapse
Yeah, I kinda figured that would be the case. Good thing I made a backup.
I suppose you wouldn't know where I can get a StageFright Patch for the OH2 version by any chance?

Sprint s4 sph l720 Octos CM13 6.0.1 help.

So I have a sprint s4 onrunning octos (cm13 build) on 6.0.1. I have the OK3 already, as I came from 5.0.1 already using OK3. My question is, what modems can I flash BACK to? Better yet what firmware can I downgrade / flash ? I am having the worst time trying to get my network settings to work. The APN settings are COMPLETELY GONE. There is no way for me to edit them. And the best I'm getting of service is 2 bars of 3G MAX, when I usually get almost full bars of 4G here at my house. I struggled to even get 3g working. Can anyone help me out?
Sph l720 sprint running Octos CM13 6.0.1. MY PHONE IS ON STRAIGHT TALK. I REPEAT MY PHONE IS ON STRAIGHT TALK. THE SERVICE PROVIDER IS NO LONGER SPRINT IT IS STRAIGHT TALK.
But for some reason, when I was having the phone activated I was having trouble getting the sim to work. But they told me that was because it did not take a sim card with straight talk. Also they never told me to use the provided network access code. The phone was literally sitting there for 3 hours NOT ACTIVATED. Because they said it was in progress. I asked if it was taking so long because of the sim card not being inserted. They told me no. But for some reason as soon as I put in the sim card BAM IT WAS ACTIVATED. could anyone please help me out in some way
something similar happen to me in the signal bar on my device there is an R and cant make calls i have a od2 firmware
eriuzz said:
something similar happen to me in the signal bar on my device there is an R and cant make calls i have a od2 firmware
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R usually stands for roaming
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bilgerryan said:
R usually stands for roaming
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hey do you have any advice ? i would greatly appreciate it

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