[INFO][HOW TO] Sprint Galaxy S4 Sim Unlock (SPH-L720/jfltespr) ATT/TMOBILE

[Tekone]

Can I do it using a Lollipop Rom?
Yes

Can I do it on OD2?
I don't think so, but maybe... The best bet is to use NG2 and then experiment from there...


An NG2 Stock Rom (modem and ROM) here is an Odin tar that i used when I did it.
Odin from the same post that tar came from... (here)

Great work bro..

Let me get this straight if I read it right. Its seem you instruction to downgrade the Rom by flash NG2 Stock rom. If my Sph-L720 on Lollipop OD2 rom, can I still flash back to NG2 stock and using this method? By flash back to NG2 from OD2 will cause boot looping or any problem?? Please be advice. thanks

 

[chris41g]

Great work bro..

Let me get this straight if I read it right. Its seem you instruction to downgrade the Rom by flash NG2 Stock rom. If my Sph-L720 on Lollipop OD2 rom, can I still flash back to NG2 stock and using this method? By flash back to NG2 from OD2 will cause boot looping or any problem?? Please be advice. thanks

should work fine, thats what i did exactly. the phone i was working on was on OD2, and I flashed the NG2 in the post i linked.. worked great.

 

[Tekone]

should work fine, thats what i did exactly. the phone i was working on was on OD2, and I flashed the NG2 in the post i linked.. worked great.

Thanks again for reply. Have you thought about just downgrade the modem on OD2 instead the whole Rom? Downgrade the modem unlocked the old school way and re-flash the whole OD2 to clear the MDC modem. That way, you don't have root and void the knox etc...

 

[chris41g]

Thanks again for reply. Have you thought about just downgrade the modem on OD2 instead the whole Rom? Downgrade the modem unlocked the old school way and re-flash the whole OD2 to clear the MDC modem. That way, you don't have root and void the knox etc...

Ssu.apk doesn't work on od2. And you can't flash just the ng2 modem and it work, there is a hybrid ng2/od2 modem that works, but the unlock needs to be done on ng2, it needs the modem and the rom

 

[Smil3yWulf]

1.Can i use cwm recovery instead of twrp??
2.Do i put any sim card in before unlocking process proceed?

 

[dcasun]

works in los angeles on 4.4.2 100% thank you for your hard work
only needed to ask i cant find the cm 12.1 for 6/23 does anyone have a link to it or have a copy of it
thanks in advance

 

[Tekone]

Thanks Chris for instruction.
Need an easy way to have the data work on T-mobile or AT&T. Is any advice anyone??

 

[chris41g]

works in los angeles on 4.4.2 100% thank you for your hard work
only needed to ask i cant find the cm 12.1 for 6/23 does anyone have a link to it or have a copy of it
thanks in advance

http://download.cyanogenmod.org/?device=jfltespr
the newest ones work now though

Thanks Chris for instruction.
Need an easy way to have the data work on T-mobile or AT&T. Is any advice anyone??

Just find the correct apn for your carrier, if you are on stock you may need to find an app in the play store to let you edit the apns

 

[dcasun]

http://download.cyanogenmod.org/?device=jfltespr
the newest ones work now though



Just find the correct apn for your carrier, if you are on stock you may need to find an app in the play store to let you edit the apns

i tried the newest cm but it doesnt show network everything before i flash cm 12.1 stock works i mean it says h+ but gets 2g speeds but hey better then nothing lol

 

[chris41g]

i tried the newest cm but it doesnt show network everything before i flash cm 12.1 stock works i mean it says h+ but gets 2g speeds but hey better then nothing lol

maybe try the jfltetmo cm12.1 thats what i actually use, but youll have to make some changes

in the zip, find
META-INF\com\google\android\updater-script

then find the line that says

assert(getprop("ro.product.device") == "jfltetmo" || getprop("ro.build.product") == "jfltetmo" || getprop("ro.product.device") == "jflte" || getprop("ro.build.product") == "jflte" || abort("This package is for device: jfltetmo,jflte; this device is " + getprop("ro.product.device") + "."););

should be the first line... and change it to

assert(getprop("ro.product.device") == "jfltespr" || getprop("ro.build.product") == "jfltespr" || getprop("ro.product.device") == "jflte" || getprop("ro.build.product") == "jflte" || abort("This package is for device: jfltespr,jflte; this device is " + getprop("ro.product.device") + "."););

 

[Smil3yWulf]

can the sim card be unactive(not in service) during unlocking process...once its done ..go to tmobile store and put it in service??

 

[iBowToAndroid]

can the sim card be unactive(not in service) during unlocking process...once its done ..go to tmobile store and put it in service??

You don't need a SIM at all to perform the unlock process

 

[Smil3yWulf]

You don't need a SIM at all to perform the unlock process

i ask if ineed sim card in the phone during process... no one answered, i send an pm to chris41 he said yes..

 

[AlpineMan]

You don't need a SIM to do this unlock.

Sent from my SM-N915V using Tapatalk

 

[chris41g]

i ask if ineed sim card in the phone during process... no one answered, i send an pm to chris41 he said yes..

pretty sure i never answered the message..

 

[anuttam10]

APK...?

For some reason Chrome is failing the SSU apk download and giving a network error. Any help/suggestions?

 

[iBowToAndroid]

For some reason Chrome is failing the SSU apk download and giving a network error. Any help/suggestions?

Antivirus flags it for some reason.

Either turn off Chrome's anti-malware or use another browser

 

[Perry16]

Problem

Followed instructions meticulously, finished the TWRP reboot. Phone stops booting at the Sprint splash screen. Any thoughts? TIA

 

[iBowToAndroid]

Followed instructions meticulously, finished the TWRP reboot. Phone stops booting at the Sprint splash screen. Any thoughts? TIA

And that's exactly why I posted that it's not adviseable to recommend using a custom ROM or recovery when one isn't necessary to perform the procedure.

OP forgot to mention that if you're coming from Lollipop, you will need to do a data wipe in TWRP to avoid a soft brick.

I've also suggested to OP that he simplify his post, as neither root access nor custom recovery is needed for this procedure. But his thread is his thread...

 

[pattisan]

Dear all,

First of all help to everyone. I would shake my experience to Unlock my SPH-L720.

All wprked fine unti full boot of S4. Phone OS Fix intorno sprint pictures with blue lightining
First time I wait almost One hour, secondo time is Now 30 minute.
Do you have any idea how to go ahead ? I have wait more time?
Odin settimo i have to deflag F Resettato Time?

Thks for help.