yashsingh1/xdaforums huggingface dataset:
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] projectexonaut:
ok how?

Well could you make a video or send the apk file you have because mine just opens and closes real quick

and just to be a little more clearer i wanna try it for a domestic unlock
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] easyrider77:
I am currently rooted. I used cfautoroot to root.

I am currently on ng5 latest update from sprint.

If I was to flash back to the ng5 official firmware I have from Sammy mobile, what (if any) affects would it have?

Would it brick the phone?

I am assuming I would have to re-root the device again, so would I use cf-auroroot again, or would it be as simple as just installing supersu again?

Thankyou for any info
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] mikeberding:
Any idea for a ng5 custom kernel. ... someone capable of asking ktoonsez of supporting? His touchwiz kernel kills data on ng5...
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] antibiotic1:
Yes i also think that ktoonsez can do that as he had done it with the l720. But i think that ktoonsez has stopped his support for l720(tell me if i am wrong), so maybe there will be another developers that will do this, also we dont have any rom that is made especially for our l720t, thats so sad :(
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] rizapn:
Just click the link provided in this topic first page, and then follow the instruction (including download the ssu file from the attached post). Nothing "special" ... After installing the apk, run it, and click the unlock button. DONE.

For your information, I'm outside US. The author said, it will NOT work for US GSM carrier.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] projectexonaut:
Well he said that it wont work on android 4.4.2 modems and up but any lower it would work for U.S. unlock and i was just asking for an modem that is lower than 4.4.2.

Also my app doesnt even load up it just opens then crashes
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] rizapn:
Sorry for asking this question, Have you try redownload the app? Mine has 207,254 bytes size.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] cRiMiNaL_Genius:
Has anyone has this issue I was hoping that the unlock method posted recently would help with an issue I was having. Was working on an unlock solution as well however i got stuck at this aspect, the phone is unlocked the app confirms this as well however I keep getting the following prompt

Enable Mobile Access

You need to activate your device to enable voice, text, and mobile data services
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] projectexonaut:
Yea and still closes on me
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Updated unlock section of OP
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] aalyatim:
This model can work in the US, you just need to downgrade the modem to version MK5. I posted instructions here:

http://xdaforums.com/showpost.php?p=56584156&postcount=103
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Thanks. Updated unlock solution on op.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] projectexonaut:
After downgrading to unlock could you upgrade back to nc6?
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] aalyatim:
No you have to stay on that baseband. You don't need to downgrade the whole firmware, just the modem.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
So what we 720T users need is for someone to downgrade entire phone to MK5, extract the modem, post the modem file for all to use, then upgrade phone to whatever firmware we desire such as ng5, then use the mk5 modem file to downgrade only the modem, then use the ssu.apk file to unlock...

Is that about right.???
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] projectexonaut:
Okay well like i asked in the first place do you have an mk5 modem file or does anyone else?

---------- Post added at 04:31 PM ---------- Previous post was at 04:24 PM ----------

Also i guess someone could download the stock mk5 and remove everything except modem.bin and flash the odin file and itll only flash the baseband? Idk but im going to try it
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] projectexonaut:
can you help me out i've downgraded my baseband to mk5 but i dont know what to do after that secret code things. do you have to do it through a computer on adb or on my phone with terminal app? if you could, can you explain it a bit more in detail. thanks
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] rizapn:
What is/are the purpose(s) to downgrade the modem part?

Can't we do those steps (enabling GCF etc) in the newer modem? I'm on 4.4.2 (NC6) and able to enter to the menu using the method already mentioned in the first page (*#0011# - Back - Q - 0000).
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] BradGrenz:
Forgive me if this is a dumb question. I got the domestic unlock working with aalyatim's excellent SSU.apk. I downgraded the modem, ran the unlocker, and modified the GCF setting. I was able to connect to the AT&T network in a quick test with the SIM from my sister's iPhone 4S. I'm considering experimenting with some custom ROMs, but I'm not sure how installing one will interact with the carrier unlocking. From searching around it sounds like the new unified jflte builds of CM11 are working on the the L720T, but will it negate my successful SIM unlock? Will SSU work on an S4 running a Custom ROM the same way it did with factory firmware? I don't mind downgrading the modem, etc, again if I have to. I just want to make sure I'm not making a boneheaded mistake due to my inexperience with this stuff.

In any case, thanks to the OP. This thread has been incredibly informative and helpful for me with my new phone.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] daniel4653:
Roms do not touch modems or unlock files so you are okay to flash any ROM
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] BradGrenz:
Great! Thanks for the reply!
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] cRiMiNaL_Genius:
Hmm could you elaborate some more on your process, I am not in the states however i have a friend that was looking into the domestic unlock for quite some time.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] JerryGNYC:
I'd like to know if WiFi calling will still work after downgrading the modem to MK5...
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bthorne79:
Hey sorry guys been busy with work I will try to get the stock rooted deoxed nc6 and ng5 uploaded Tuesday when I'm off of work
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] BradGrenz:
Sure. My L720T was running the latest stock Sprint Firmware and I had Odin 3.10 installed on my Windows PC.

First I rooted it using CF-Auto-Root using this L720T specific file.

Next I downgraded my modem to the MK5 version linked in this post using Odin (don't forget to unzip the linked file and select the TAR.MD5 file inside in Odin).

Next I downloaded and installed the Sprint Samsung Unlocker APK from this thread and installed it on the phone. I ran the app and clicked "Unlock".

Finally I followed the directions in this post by SSU's creator aaylatim to change the GCF setting for domestic use.

After that it was unlocked and worked beautifully on AT&T. Using stock firmware I had to manually enter in the APN settings under mobile networks from AT&T's Support site. Custom ROMs may have that stuff prepopulated, though. AT&T worked under the Official Firmware, and I was able to successfully flash to the PAC-MAN NIghtly ROM last night without any issue.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Added mk5 modem to downloads section of op with credits
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] cRiMiNaL_Genius:
Activate Device

Great Job Man, I'll let you know how it goes.

On a side note I have been posting this question for a while but here goes my phone is unlocked however whenever i try to make a call I get a prompt that says "You need to activate your device to enable voice, text and mobile data services. I've been searching however it does seem as if i'm the only one with this. That aside when someone calls they get busy even though the phone is ringing in my hand actually when i answer i get a prompt that i missed the call. Weirder still I somehow have Spark Enabled on my NC6 rom also I now have the hotspot option under network connectiond :D obviously I have no use for spark but native tethering should come in handy... In anycase Id still like some help with the Activation crap i just cant seem to get past it :(
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] lalapannyamuk:
ssu.apk force close

Hi [MENTION=307784]aalyatim[/MENTION]

My ssu.apk keep closing on my s4

Im using s4 L720T on 4.4.2 NG5 rooted. Can i use ssu.apk if i flash stock on NG5?

Or I have to downgrade?

Thx for your response
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] shadowswittness:
You will have to downgrade the modem to mk5. The Odin tar file is in the OP to flash.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] lalapannyamuk:
Thanks, its work. My L720T unlocked now

But, can we change the spinning 3G icon to an aosp icon, like E,3G,H?
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] jayshocka:
Any word?
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bthorne79:
Yeah sorry cable guy came late for internet I'll have links this weekend I wiped my computer to start clean
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Can anyone help? My native hotspot hasn't been working for a few weeks now. I've even tried doing a prl update and then reapplying the hotspot mod, but I always get the same error about 5 seconds after the first device connects. I'm stock nc6 and I've included pictures of my settings and the error I'm receiving 5 seconds after the first device connects. Please keep in mind my data signal to the tower is solid and wifi tether router works perfectly.

I get this native error 100% of the time, even when I have full bars. I have also tried connecting other devices to my native hotspot. Always, a few seconds after the first device connects (even if it's a different device than before) I get this error.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Delete
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
I just figured it out. In Wanam, I had the wifi ap clients set to 10. I reduced it back to 8 (default), rebooted, and now everything works fine (see pic for example).

I think I'm going to try increasing it back to 10 using galaxy tools and see what happens.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
I increased the limit using Galaxy tools. With no errors. Hotspot worked perfectly. Just leave wanam at 8 (default)
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] easyrider77:
I'll be anxiously awaiting to d/l the deodexed version.

I tried to deodex mine and got stuck at the samsung galaxy s4 black screen :(.

The zip file I have is completely deodexed and has only apk files throughout the system with no odex files at all but it just doesn't boot. Perhaps I'm doing a step wrong, in twrp the latest 2.8 I think it is, I clean dalvik and other cache, then I go to format system, type in yes and format system. I also tried the reverse format then clear cache, but both ways resulted in stopping at the same screen on bootup. I tnever gets past that screen.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] shadowswittness:
Can someone upload a recovery flashable MK5 modem zip. I'm not near a computer and won't be able to Odin for awhile. Many thanks
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bthorne79:
I don't think that the s4 supports modem through recovery like the s3 did that's why all have been Odin flash even with the normal s4

---------- Post added at 01:13 AM ---------- Previous post was at 01:07 AM ----------

I got ya covered working on nc6 right now before I hit bed and ng5 tomorrow
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] easyrider77:
Cool. If ya need a tester let me know. I've been flashing the last few days like a madman so one more aint gonna make a bit of difference lol
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] lalapannyamuk:
Can we change the spinning 3G icon to an aosp icon, like E,3G,H?
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bthorne79:
Yes it will be deoxed so themeing can be done
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bthorne79:
Easyrider77 has my links for the 2stock roots he is giving them a run and will report back as soon as I know both are good to go I'll post link up I have flashed both and they boot. But I don't run stock OEM ROMs
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] ochoabuddy:
downgrade

I hope this is the right place for this. I'm trying to downgrade to the MK5 firmware to unlock my device. When I attempt to flash MK5 firmware using odin it fails saying SW. Rev fail or something like that(already cleared that screen) and causes the phone to say Firmware upgrade encountered an issue when I attempt to reset.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] rizapn:
You do NOT need to downgrade the whole firmware, just flash the MK5 modem part. I did it with my L720T with no error.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] ochoabuddy:
downgrade

Thank you, it shows the baseband being mk5 now.

---------- Post added at 04:59 AM ---------- Previous post was at 04:39 AM ----------

And one more thing.

This link here:

http://xdaforums.com/showpost.php?p=56584156&postcount=103

does not open any kind of menu. is it something i'm doing wrong, or do I need to do it differently for my setup?

I am running CM11 M12 and TWRP 2.8.1.0.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Did you go to the first post (post one) of that link? All the instructions are on post one.

..or try this url link. This one will take you directly to the first post: http://xdaforums.com/showthread.php?p=56486609
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] antibiotic1:
Well i want to ask all of you what rom are you using?
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] easyrider77:
It really depends on each individual really. Personally I do rom flashing and tweaking and messing with as a hobby, so I am what they call a flashaholic most times (for now anyways) and while I do slow down for a bit, the rom itch creeps back up :).

It's a preference above all. Some people prefer TW over AOSP or vanilla android. Some prefer vanilla android over TW. Some prefer Sense over other stuff and so on. I am not a fan of s3/s4 TW at all, but ironically enough I do not kind the s5 TW look and style. I actually am torn between that and vanilla android.

Then we have options like in settings, "what does each rom bring to the table for me" is the question each one should ask. Every rom has it's own twist and flavor of settings and mods baked in to the likeing of the rom maker, not always to the user. WHile the roms are for the most part ALL good, some have issues with certain phones, even on the same network. A good example of this is I have the sprint triband version l720T and there are VERY few TW roms out for this phone, and vanilla android or aosp roms are slim pickens as well, while the international version of the sprint phone (I9505 is one) has quite a bit of roms out both aosp/vanilla android and TW style. Kinda sucks for us that have the L720T phones as we don't have a whole lot of choices :(.

So in short it really boils down to what you the user wants or likes from a rom, and then you research and look at pics of said rom to see if you really want that in a rom. Another good thing you can do is YouTube a particular rom, that will give you a rund down of what's in that rom you are looking at trying.

Most Universal roms are a safe bet, although problems can arise, just make sure and nandroid backup or have other roms you know work on backup somewhere in case you get stuck at the startup screen or somthing.

To answer your post though some I use are:

-Carbon Universal rom (Aosp 4.4.2 KK)

-Sacs Rom (TW 4.4.2 KK)

-CM11 (Aosp 4.4.2 KK)

-Omni Rom (Aosp 4.4.2 and 4.4.4 KK if I remember right)

Some I have not tried but they say work are:

-Negalite (tw Blue Themed) not sure what android version it is

-Pacman ROM (Aosp) - as far as I know its 4.3 not 4.4 Kitkat

-Triforce ROM 5.4 (TW 4.4.2 KK)

Always remember to make a backup be it a nandroid backup or a rom you know and trust that works to fall back on, and when using a aosp style rom to install said version android of gapps ie: 4.4 gapps with 4.4 KK roms, 4.3 gapps with 4.3 roms, etc..
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bthorne79:
OK guys after some trial and error and with the help of Easyrider77 willing to put his phone up for test we now have working stock rooted deodx for our 720T they are currently being uploaded to my AFH there will be the NC6 and the NG5 and both Odin Modems which if you use they will need to be flashed in the PHONE slot NOT PDA. With these two OEM ROMs being deodx they can be themed nodded and tweaked so if any themers hiding in here have fun once both files done uploading I'll post link.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bthorne79:
Ok they are all here ng5,nc6 Odin modems and the Stock Rooted Deodx ROMs https://www.androidfilehost.com/?w=files&flid=20593
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] ochoabuddy:
I have tried it, it just sits and says "Sim Lock Status:Checking..."
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] jayshocka:
Gonna check it out after cardinals game
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] antibiotic1:
I have finally made c-rom to work on my l720t. I was having problems with not receiving calls(gsm problem). This is the procedure what i did:

1. Install C-Rom 7.1 Unified http://xdaforums.com/showthread.php?t=2694374

2. Flash gapps http://xdaforums.com/showthread.php?t=2397942

3. Flash the file from this post(this is the gsm fix).You can use this fix with every cm11 based rom if you have such problems http://xdaforums.com/showthread.php?t=2660805

4. Flash AOSP KT Kernel,now restart and after it boots up install kt profile v5 http://xdaforums.com/showthread.php?t=2288309

Yes u see good,kt kernel is compatible with c-rom on our l720t. When i flashed kt kernel i saw the real flying performance of my device, it is faster than ever before. I am also little bit flashholic, and i have tried almost every rom tw based, aosp, aokp, aosb .... This is the best combination as for now

Happy flashing and dont forget to do nandroid backup ;)
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] onurkaya4141:
Note that CF will flag Knox.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Added to op in both the roms and downloads sections. credit bthorne79
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Added this c-rom solution to rom section of op, credit antibiotic1
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] lucky_515:
i rooted via odin latest version ...used cf auto root methad..then flashedd twrp latest version from there offical site 2.8..ive got the sprint variant code name jfltspr model number SPH-L720T on firmware NG2.....4.4.2 ....i unchecked auto reboot in odin when flashing twrp...when i rooted with cf autoroot i got the red android guy ..thats when i know it took,so if you guys get the no su bianary installed mess when opening the su app dont panick just reboot like i did open again and it should take...if you see the red android you know it took...i then flashed the only custom kitkat rom listed in this thread ..and it worked out great as well..but i did have one main problem..it was getting accsess to external sd card..the normal way i use is xposed frameworks sd card fix..but it wouldnt download at all kept getting errors..i loooked at some flashable zips that might of worked but after reading threw the threads people talked about bootloops and other problems with these methads,and with no backup yet because it wouldnt let me for some reasin not to external storage or internal..i used the app from dev here on xda named tliebeck..app called nextAPP sdFix ..it worked like a charm..after installing and going threw the promts i had accsess to everything!!..even set the back up path in titanium backup to external storage..big thanks to every dev that developed these tools..thank you..and hope i posted this in correct place...dev did ask to give reports if these methads worked or not..
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Thanks. I used the same nextAPP sdFix months ago, and it worked perfectly for me to.

Please don't quote the entire op (post one) when replying. It's considered bad etiquette because it's incredibly long just to scroll down too your question.

Thanks for the report and have a great day.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] antibiotic1:
For those who are on stock based rom's and want to deodex your rom here is the link that will help you to do it. I had tested it before on NG5 stock l720t rom. Here is the link http://xdaforums.com/showthread.php?t=2725930

ps. This is only for kitkat rom's
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bthorne79:
Why do that I created flashable rooted busybox deoxd stock ROMs for nc6 and ng5
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] antibiotic1:
This is for those that dont want to clean install their rom's
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bthorne79:
True didn't think of that I'm just so used to clean start on all I will work on a debloat for everyone if you want them
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] JBob1014:
I'd be all over a debloated stock/rooted NC6/NG5.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bthorne79:
Will work on tonight
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] thirdcoastraised:
Are we able to flash with Mobile Odin on this crazy device?
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bthorne79:
For what
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] thirdcoastraised:
For these deodexed roms and modems and such
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
720T is not yet supported by mobile odin.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] thirdcoastraised:
Of course it's not... LOL. cool thanks
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] random4849:
Samsung galaxy s4 sph 720t

Hi I tried the unlock and it said it was successful, but when I tried to use my ROGERS (CANADA) SIM card , it wouldn't connect to the provider. Any help would be greatly appreciated.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] daniel4653:
Did you change your mobile network type to GSM/UMTS rather than CDMA+LTE
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bthorne79:
The ROMs are flashable through custom recovery and the modems need to be extracted and flashed with odin
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] easyrider77:
This method didn't work for me. After drodexing the install hit stuck at the black Samsung s4 screen.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
I see samsung security policy updates are being pushed through the play store now like a regular app upgrade now.

I don't want to see this update in the store for fear I will eventually accidentally tap update, apply the new security policy and lose root on my stock nc6.

Is there a service/app I can freeze that will stop the app store from checking my security policy version?
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
And I already have security policy updates turned off in my settings (but that is not the same thing as samsung pushing it through the play store). See pic below
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Here is a pic
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Problem solved. I figured out what service to freeze. Thanks bgmg for helping myself lol :)
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bthorne79:
Bgmg run my deodx stock it has Knox removed