yashsingh1/xdaforums huggingface dataset:
[Sprint Samsung Galaxy S 4 Android Development] omenbass:
..and I'm stuck

My l720 is on 'C-ROM' and for some reason odin is not successful flashing the correct modem. It tells me that it passed but when I check out settings I'm still on VPUFNG2 baseband and can't seem to change this. Any ideas?
[Sprint Samsung Galaxy S 4 Android Development] daniel4653:
Power down your phone completely. By holding the power button and going to teun off. Once off hold the power button and volume down to boot into download mode. If you try getting to download mode with the advanced reboot menu it wont flash correctly.
[Sprint Samsung Galaxy S 4 Android Development] ObviousMan:
Attempted to use this on 720T, predictably without any success. I really do not care about domestic unlock, only need the international one. Any suggestions?

OM
[Sprint Samsung Galaxy S 4 Android Development] daniel4653:
Please search! There is NO known method for unlocking the Triband version.
[Sprint Samsung Galaxy S 4 Android Development] Tekone:
For those who has problem with WIFI after downgrade the modem to MDC, how do you fix it?? A device flash back to NAE and WiFi still can not turn on. Device's downgrade to MDC by One Click EXE Odin w/MDC modem from rwilco12.com. After unlocked, upgrade back to NAE and still can turn WIFI on. Do I miss something or that one click exe from http://rwilco12.com downgrade my baseband too? Please advice anyone??
[Sprint Samsung Galaxy S 4 Android Development] flight243:
Same happened to me. Went back to NAE after unlocking the device since the rom went a little bit slow when interacting with network functions and now the wifi is not working anymore. I also noticed that the Knox bit changed from 0x0 to 0xffffff in the download mode screen.

Will flashing NG2 fix the issue?

Any help is appreciated!

Edit: for those using your phone on UMTS/GSM. Have you managed to get the AMR codec working? I noticed an AMR Undef in *#0011# but the Verizon S4 variant gets AMR as supported codec (Speech VER) in the same network in the same cell. Just curious if it works for you in other modem versions...
[Sprint Samsung Galaxy S 4 Android Development] Tekone:
Did you flash the MDC from here http://xdaforums.com/showthread.php?t=2338919 He/she's MDC modem make rom run slow and no sound. After flash back to NAE. Wifi still can not turn on.

Maybe we need to restore stock rom from here http://rwilco12.com/downloads.php?d...axy S4 (SPH-L720)/Stock ROMs/NAE/Original TAR
[Sprint Samsung Galaxy S 4 Android Development] flight243:
Those are the modems I used, yes. Maybe flashing the whole NAE again might fix the issue but it's really strange as we only changed the modem. Also I don't know if flashing the whole stock will revert the unlock or not (the nv items should not be touched but im not sure if the stock rom perfoms a SCRTN after flashing).

I'm on hw rev 8 btw.
[Sprint Samsung Galaxy S 4 Android Development] Tekone:
Maybe... It could revet the unlock. If so, we can do it again. Its not that hard.

Strange is, I have unlocked one about few weeks ago and after flash back to NAE and Wifi work fine. It have to me this galaxy. And only few people report WiFi problem even after flash back to NAE. So, some people have wifi problem and some don't
[Sprint Samsung Galaxy S 4 Android Development] flight243:
The process is stupidly easy thanks to [MENTION=2684188]autoprime[/MENTION] and [MENTION=1530456]meanngreen04[/MENTION] but we can enter in a loop if the wifi issues appear once again after unlocking the device :eek:

Lers hope someone can shed some light on it!
[Sprint Samsung Galaxy S 4 Android Development] Tekone:
Double check if you SET BACK TO MTP+ADB on the step after you dial code ##3424#. Last time, I unlock another s4 without wifi problem after flash back. This one I forget the SET back and went to for domestic unlock. Hope this not this step cuz the problem.
[Sprint Samsung Galaxy S 4 Android Development] flight243:
I set MTP+ADB after unlocking with MDC and before flashing back the NAE baseband. I don't want to believe that's the root of the problem cause that setting only affects the behavior of the device when powered on and running, not while in download mode.
[Sprint Samsung Galaxy S 4 Android Development] ObviousMan:
I did search after the fail, so I gathered that much. Bummer.

OM
[Sprint Samsung Galaxy S 4 Android Development] Tekone:
Those who has WIfi fail after flashed to MDC Modem and back original modem fix the Wifi problem? please advice
[Sprint Samsung Galaxy S 4 Android Development] flight243:
For those with Wi-Fi problems, I managed to get it working again after the SIM unlock being in NAE baseband. Here's what it did.

- Reflashed NAE modem again. Rebooted and checked Wi-Fi. Failed.

- Downgraded to MK2 modem. Rebooted and checked Wi-Fi. Failed.

- Since the Knox counter kept showing 0xfffffc instead of 0x0, and the Wi-Fi wasn't working, I flashed the whole stock NAE from Sammobile or rwilco and it worked! :good:

The SIM unlock for international sim cards was maintained (luckily, no SCRTN performed after flashing the stock rom with Odim).

Probably only the last step is needed, although I would also try to downgrade to MK2 and then upgrade to NAE modem again before that, especially if you took the OTA MK2->NAE back in the days.

Good luck!!
[Sprint Samsung Galaxy S 4 Android Development] maurogg84:
I'm on the NG2 modem, would I be able to downgrade then revert back to NG2?

Sent from my SPH-L720

---------- Post added at 09:53 PM ---------- Previous post was at 09:36 PM ----------

Also, would I have to stay with stock rom, or can I use AOSP ROMs after unlocking?

Sent from my SPH-L720
[Sprint Samsung Galaxy S 4 Android Development] TheGoodFellas:
+1 I'd like to know this as well. I'm currently on android 4.3 and MDC baseband+bootloader. Can I upgrade to android 4.4 and NG2 while keeping unlock ? Anyone using NG2 with the unlock working? Thank you
[Sprint Samsung Galaxy S 4 Android Development] FrodoArg:
Unlocking it to use in Argentina.

Hi and thanks in advance for any help I can get. I've read tons of this thread pages but I still don't know what to do.

What I have:

My aunt brought me (I live in argentina) a S4 from Sprint she wont be using any more because she got the s5.

Of course is locked so I get the invalid sim when I try my Claro sim.

The baseband is the NG2.

Android is 4.4.2

What I want to do:

Use all the phone functions and Claro 3g network if possible keep the latest android .

I don't know if it's possible just to flash a stock samsung ROM and that will unlock it or follow the instructions of the OP to unlock it with the baseband that I have because right now all I can do is use it as a tablet.

Thanks for any help!
[Sprint Samsung Galaxy S 4 Android Development] FrodoArg:
(Bump)

Update:

I was able to root and take the phone to MDC baseband and apply the international unlock but get the phone to find the Claro signal. Don't know if upgrading to NG2 will help or if it's doable. Anyone went back to ng2 keeping the unlock and how? thanks!

If anyone needs help on how to root the ng2 and apply the international unlock ask me it's really simple.
[Sprint Samsung Galaxy S 4 Android Development] maurogg84:
You can flash the modem with Odin, it won't change the unlock. If you keep the MDC modem with NG2 firmware, a lot of things won't work. I would also try the domestic unlock before reverting back to NG2, that would unlock other bands that your phone might need to connect to your carrier.

Sent from my SPH-L720
[Sprint Samsung Galaxy S 4 Android Development] Tekone:
How possible to cause the WiFi not working if a device updated from NAE to NG2?

A device have been Domestic and international unlocked, and flashed back to NAE and tested anything working fine, WiFi, work with T-mobile and AT&T etc. After sold to a dude, and he OTA updated to NG2 and claimed the WiFi not working. And the knox is void on download mode (0x1).

If the WiFi working on NAE and then OTA to NG2 shouldn't cause the KNOX problem.?

Anyone have experience this problem, what's best way to correct this problem??
[Sprint Samsung Galaxy S 4 Android Development] daniel4653:
Did you root the phone when it was on NAE?
[Sprint Samsung Galaxy S 4 Android Development] Tekone:
NO.. Rooted or unRoot will cause this problem right? Even rooted, OTA update will unRoot itself won't cause the knox.
[Sprint Samsung Galaxy S 4 Android Development] dannybz:
L720VPUFNG2 - Unlock

Got a Galaxy S4 SPH-720 un-touched with the latest update from sprint: L720VPUFNG2 .

Can anybody let me know how can i go and unlock it? Where to search for solutions or process? Or where to start?
[Sprint Samsung Galaxy S 4 Android Development] farookh:
Galaxytool 4 root users from playstore.

100% confirmed uicc unlocking
[Sprint Samsung Galaxy S 4 Android Development] dannybz:
Will this enable using the S4 with any carrier outside the USA?
[Sprint Samsung Galaxy S 4 Android Development] daniel4653:
Yes.
[Sprint Samsung Galaxy S 4 Android Development] FrodoArg:
Can anyone help? I still can't get the phone to connect to the networks, unlock was successful according to odin did the domestic unlock too just in case, still not getting any signal. Anything I can try or check if he unlock or anything else went ok?

I tried going back to ng2 and could but no change, and went back to mdc just in case. Cant find a solution. Thanks for any help.
[Sprint Samsung Galaxy S 4 Android Development] syconu:
i have a l720t with the baseband l720tvpubng5 and i want to know if i can put this on cricket or staraight talk or if im screwed
[Sprint Samsung Galaxy S 4 Android Development] daniel4653:
Search the SpH-l720t thread in the Q&A section to find your answer.
[Sprint Samsung Galaxy S 4 Android Development] doctorman:
the NEW UNLOCK

Why do you people still use this method when there is more universal and easy method here

http://xdaforums.com/sprint-galaxy-s5/general/sprint-samsung-unlocker-unlock-sprint-t2928250

just download the ssp.apk and install it and run it boom unlocked!
[Sprint Samsung Galaxy S 4 Android Development] rekamyenom:
NM.... :rolleyes:
[Sprint Samsung Galaxy S 4 Android Development] Gambitv01:
what about for the s5 sprint?

what about for the s5 sprint?
[Sprint Samsung Galaxy S 4 Android Development] djohne:
S5 confirmed working but I'm international not sure abt domestic and this method but there is a thread abt that
[Sprint Samsung Galaxy S 4 Android Development] Gambitv01:
yes need to work in domestic usa

yes need to work in domestic usa

got the note 3 to work and the Galaxy S4 Sprint L720Tt to work in the states what about the s5 sprint and note 4 sprint?
[Sprint Samsung Galaxy S 4 Android Development] Gabewithkungfugrip:
There should really be a warning about using that download link from "Dev-Host." If you don't untick the hidden little "download with dev-host manager," you will be infected with malware upon running the download. It names the file the same thing as the correct unlock file we are trying to download. I have run several scanners and rootkit removers, and I still am not rid of the malware it infected me with.
[Sprint Samsung Galaxy S 4 Android Development] FrodoArg:
Ok so, now I have the phone working, what I did was make a network reset with ##72786# now it asks me to activate the phone but it works anyway with Movistar, the thing is the network drops all the time, the most I was able to get it to work was 5 minutes and then the signal drops and I have to manually register the phone again in Movistar network. Could it be the baseband? I'm on mdc would upgradint to ng2 or nae help? Thanks in advance for any help.
[Sprint Samsung Galaxy S 4 Android Development] THEVAN3D:
random reboots

hey, i get random reboots after unlocking

is there a way to fix this?

maybe lock it back to sprint somehow and re-unlock it?
[Sprint Samsung Galaxy S 4 Android Development] daniel4653:
Unlocking a phone in no way would cause that. It has to be your ROM and Kernel combo.
[Sprint Samsung Galaxy S 4 Android Development] THEVAN3D:
right now, yes, i am on custom rom and custom kernel

but even when i was on whole stock touchwiz thing it still used to do this.

sometimes, out of nowhere, the screen just freezes, then goes black with vibration and starts booting up again.

in some cases it even boots up into safe mode causing me to lose all my accounts and having to add them back again manually.

this is frustrating i am one last step away from throwing my phone to the wall :)
[Sprint Samsung Galaxy S 4 Android Development] FahrenGrade:
I'm in the same boat as you man.

Could you please give me a step by step to get this working in Israel?
[Sprint Samsung Galaxy S 4 Android Development] yossi2010:
wow it was a long time ago and i did it for a friend.

I dont remember exactly what i did i just remember that i downgraded something(the baseband i think nae->mdc) opened the sim lock and it just worked without having to go back to the newer version.

i just followed the instructions.

i wonder whether the simlock will survive the lollipop upgrade.
[Sprint Samsung Galaxy S 4 Android Development] eric303:
can somone tell me why i cant click the "scan and unlock" button? I click it and nothing happens, I made sure i'm on DIAG mode, the ports are on 3/4 and my baseband is MDC
[Sprint Samsung Galaxy S 4 Android Development] 2far:
Stock

Does any one knows how to revert this stock!?

I am getting "Firmware upgrade encountered an issue.." in Odin every time that I try MDC, MK2 Stock firmwares says FAIL! (Auth)

The only tar that is working is the MDC modem tar found on this thread. Then when the phone boot up there's no sound no WiFi and is phone is really slow. I did a factory reset and nothing!

I followed everything up and It went smoothly, even followed this http://xdaforums.com/showthread.php?t=2530610 It worked with (Straight talk att sim card) but I was not getting a constant service decided to go back to sprint and then just trying to go back to stock my firmware!

PLEASE HELP!!

Check pictures please!!
[Sprint Samsung Galaxy S 4 Android Development] aramic:
hi

im from iran after stupid ##72786# command my sim invalid appears.

i followed all steps and got sim invalid disappear

everything was fine untill i tried the file for mf9 and after that wifi did not turne on also device worked too slow that cant use it anymore,

i had a clockworkmode backup and i tried to restore it but nothing happend,

also i have to add that in odin by mistake i choose that mf9 file in cp insted of ap.

please help me please.
[Sprint Samsung Galaxy S 4 Android Development] 2far:
At least I gotta it out of that state, with the rrot method that I used for my l720 download: which is CF auto root: http://download.chainfire.eu/325/CF-Root/CF-Auto-Root/CF-Auto-Root-jfltespr-jfltespr-sphl720.zip

Give it a try! as you see! before your post I was having the same issue just by doing that stupid mf9 full.. update

When you root it then do the MDC again, at least it will work.

Trying to go back to stock as long as I am getting 3g speeds instead of 4gLTE

Good Luck!! Let us know!
[Sprint Samsung Galaxy S 4 Android Development] aramic:
thanks for replay

i tried that auto root with ap part of odin get success and after that i again use the mdc file but nothing happend,

i really dont know what to do :((
[Sprint Samsung Galaxy S 4 Android Development] aramic:
hi i found the soloution in

http://d-h.st/zWf

i download the NAE modem only file and use it in odin all problems fixed

wifi , sound problem, slow device all gone

if anyone have this issue search this topic

[HOW TO]Update to 4.4.2 NAE w/Root while Keeping MF9 Bootloader w/ Lock Screen Fix

and download that file from there,

Im so Happy hope others problem will be solve.

just extract it and put it in pda slot.
[Sprint Samsung Galaxy S 4 Android Development] 2far:
Glad hat you fixed Are you still getting the no simcard installed?
[Sprint Samsung Galaxy S 4 Android Development] aramic:
I didnt get what u mean exactly but first i have done the unlock processs then i installed the nae file.

And the sim card was installed when i was installing the nae file.
[Sprint Samsung Galaxy S 4 Android Development] 2far:
I mean I keep getting no sim card installed! So i am not getting 4g lte in sprint network!

dunno if you fixed it!?
[Sprint Samsung Galaxy S 4 Android Development] aramic:
I fix mine

Just follow the method and dont upgrade that f9 file install that one i put there
[Sprint Samsung Galaxy S 4 Android Development] 1leggeddog:
Ok i did this tutorial and clicked the button on the unlock app but no way of knowing if it worked or not.

I have downgraded my modem as instructed from NG2 -> MDC

Still can't connect to my carrier
[Sprint Samsung Galaxy S 4 Android Development] Okijaamaka:
Hello

i am on NE3 Baseband, please what will i do to use the phone outside USA?

thanks
[Sprint Samsung Galaxy S 4 Android Development] lord dredd:
Awesome

still kicking a**

works great

just bought a s4 sprint L-720 on 4.2.2 , everty other app failed be it , galaxy tools or ssu

this one did it in a few seconds :)
[Sprint Samsung Galaxy S 4 Android Development] Bob1859:
Anyone Else Have Issue with Sprint S4 Unlock file?

2. Now that you are set to diag mode it is time to install the Sprint S4 Unlock Tool, download HERE. pw on unlock tool zip = meanngreen04

@meanngreen04 was awesome enough to package my unlock method into a 1-click app. Show him some thanks.

============================================

Have not been able to download the Sprint unlock tool since it "scammed" and causes problems with my pc that

takes me couple of days to resolve.

I have emailed the originator of the link and no answer yet.

So, is anyone else have Sprint Unlock Tool file issues? If you recently used it and didn't have issues let me know and

any advice is much appreciated.

I have a S4 SPH-L720 to be used for FreedomPop using Sprint carrier:

Software = L720VPUAMDC

Hardware = L720.08

Android = 5.01

Baseband = L720VPUAMDC

kernel = 3.4.0-4745659

Knox = 2.3

I'm trying to unlock sim so phone can be used on ATT GSM network.

I'm currently using LG Optimus 6 D500 that I unlocked, rooted, partitioned SD for more memory all myself so I know a little, especially, when follow instructions.

Any constructive advice is welcomed
[Sprint Samsung Galaxy S 4 Android Development] vforvlive:
Hello ppl

I got S4 Sprint SPH L720 with stock 4.4.2 NAE right now speaking

plz can anyone tell me what shoul i do to use the phone with Greek sim car in Greece?

I have managed many devices before but stuck in this one....

p.s: some times sim working for 4-5 mins or less. i know thas beacause i made a call from this phone
[Sprint Samsung Galaxy S 4 Android Development] Suncatcher16:
It is weird 'cause would it been SIM-locked then it would have been locked permanently, not twice a day))

It seems you have another problem.
[Sprint Samsung Galaxy S 4 Android Development] vforvlive:
Ok so far what i did

SPH-L720 4.4.2 NAE rooted with CF-Auto-Root changed modem to MDC

Used the first page instructions

but not "You may be asked your for SPC/MSL code prior to the menu opening..." it didnt asked me!

In the end i set my device to GMS manually (Auto some times geting stuck) chousing my sim provider (Cosmote GR) its making register fine

and shows me the sim network like it shoud H+ (I dont care for thas section), wifi works (doesnt detect some providers like mine is Forthnet) but when sim is in it full ok!

i made the Apn settings to my provider fine

The major problem for me is the sim signal that shows me full status at the start

I even can manage one call on each time i start the device but if im lucky
[Sprint Samsung Galaxy S 4 Android Development] XxpikaachuuxX:
Im still on 4.4.2 and imWondering if i can uprage to official 6.0?

If not, can i upgrade any firther than 4.4.2?
[Sprint Samsung Galaxy S 4 Android Development] Fahadroid:
hi

i have OH1 bootloader

which modem i should flash to use gsm over cm13 & other rom (in pakistan).

Please help
[Sprint Samsung Galaxy S 4 Android Development] taoufiqlak:
I am trying to go back to the first modem but it fails ! it stopped in the middle , now I can't flash any ROM too or the second Modem !!! please help help help !
[Sprint Samsung Galaxy S 4 Android Development] taoufiqlak:
WARNiNG !

Yesterday, I was trying to unlock my SPH-L720, I followed the thread, it was necessary to change the MF5 Modem like you said.

When I flashed the other Modem that was recommended ( MDC )and when I am done unlocking, I tried to go back flashing the MF5 Modem again, but it failed ! That caused me the "Firmware Upgrade encountered an issue" problem, luckly, the Download mode was working so I flashed a TWRP recovery, then I did the wipes, then I flashed Lollipop 5.0.1 official ROM, but when the phone started, it was in mess, sound not working and black screen sometimes, lag ...

So I tried to flash the One Click Odin Restore for SPH-L720, but it failed did not pass and caused again the problem of " Firmware Upgrade ...." then I flashed the recovery again , did the wipes and I was lucky because I flashed the official 4.4.2 ROM and it worked ! The phone was normal again , then I upgraded it to 5.0.1.

This is my story with solving this problem, It can be helpful for someone.
[Sprint Samsung Galaxy S 4 Android Development] thangherodientu:
Change Qualcomm Settings doesn't work on AOSP

AOSP: Connect phone to computer. Enable USB Debugging in the Developer options. Open command prompt/terminal.

Enter adb shell. Then type su hit enter.

Confirm # then type setprop sys.usb.config diag,acm,adb then hit enter. This mode disables itself after you reboot the phone.

please check the step 1 to change Qualcomm usb setting for AOSP -> it doesn't work. I am running CM 12 -> please help
[Sprint Samsung Galaxy S 4 Android Development] djuka007:
I've managed to unlock the phone, the card was recognized but then it gave me that "Activate" screen, which I've switched to manual, the screen run for a while then it reported "No SIM card" and rebooted and after that SIM couldn't be recognized anymore. I've tried the procedure several times again, but no luck.
[Sprint Samsung Galaxy S 4 Android Development] Moritzio:
I have GSM working, but cannot get back to CDMA. Actually LTE on Sprint works but the CDMA/EVDO does not work. I can browse the internet and use VOIP programs but cannot use the native dialer or Messaging program.

When I select the preferred Network to be CDMA/EVDO/LTE, it stills shows GSM/WCDMA/LTE. I see two Network Mode menus, one for preferred network and just Network mode:

Network Mode (preferred network) has the CDMA/EVDO options in it, and shows GSM/WCDMA/LTE no matter what I select.

Network Mode shows autoconnect options, which are LTE/WCDMA/GSM, WCDMA/GSM, WCDMA only, GSM only)

Sprint SPH-L720

Android 4.3

Baseband L720VPUAMDC

Build JSS15J.L720PUEMK2

Kernel 3.4.0-1927016 se.infra@R031-10#1

When connected to 4G LTE, About Phone Status shows:

Network - unknown

Mobile network type - LTE

Service state - Out of service

Mobile network state - connected

I can successfully update Profile and PRL and the MDN and MSID are correct. I have also tried carrier reset with MSL and factory reset without any indicated errors.

[edit] Started over. See next post[/edit]
[Sprint Samsung Galaxy S 4 Android Development] Moritzio:
HFA reset the device and started over. I have FreedomPop (UK 3) GSM recognized, with ICCID code in About Phone and no "Invalid SIM" message. I removed the two build.prop edits lines and now can select GSM/UMTS as well as CDMA.LTE. I have added the FreedomPop.foggmobile.com APN.

Only problem is I cannot turn on roaming, which this SIM needs. The menu is not shown. How do I turn on or access that menu?

[edit] Roaming options have now reappeared somehow after I started doing the domestic unlock process outlined here. I also found this information was required to get into the service mode correctly for the Domestic unlock process,[/edit]
[Sprint Samsung Galaxy S 4 Android Development] asadnow2k:
contact with me via pm i can unlock for u free
[Sprint Samsung Galaxy S 4 Android Development] SpaceKebab:
I've long since [domestic] unlocked my L720 (T) through a downgrade to the MK5 modem, was wondering if upgrading the modem would get rid of my unlock