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how to downgrade from mk2 and domestic and international unlock s4

24th February 2014, 04:11 AM |#1  
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This is my first post ever so ill make it sweet and to the point... And this is assuming you already have a rooted sprint s4 and know how to use odin

For those who have upgraded to the MK2 boot loader there is still away. I will tell you exactly what I did to unlock my phone and have it working perfectly..

step)1 If you are on the MK2 boot loader then NO you cannot downgrade to mf9 (I have tried several different times, several different ways) but fortunately you can downgrade to MJA, which will allow you to flash the MDC modem, so all I did was Odin @rwilco12's MJA file found here:

http://www.rwilco12.com/downloads.ph...Original%20TAR
(my phone did not boot after this I had to go into recovery and do a factory reset then it booted right up)

step 2) I signed into google and downloaded 2 files: #1 Build prop editor by jrummy apps inc. and #2 apn settings shortcut by saikoro

step 3) I used Odin to flash the MDC modem by @Unknownforce found here:
(after you flash the modem wifi will not work that's why I downloaded the build prop and apn apps first)

http://forum.xda-developers.com/show....php?t=2338919

step 4) I did the international sim unlock found on @autoprime's post here:

http://forum.xda-developers.com/show....php?t=2415587

or on youtube here:

http://www.youtube.com/watch?v=lawcT1qqnLA

step5) I followed @eheilner's steps to do the domestic unlock: (it took me a while to get into the service mode main menu so just keep trying until you will get it)

step 1. use an app to input apn or do it your self. build prop editor add ril.sales_code=lol ro.csc.sales_code=lol do not reboot.
step 2. enter service mode. *#0011# menu back menu select 0*
step 3. now you will be at main menu. pick 3 LTE
step 4. pick Pref mode set. then pick 1 GSM/WCDMA. (do not reboot)
step 5. go back to main menu then 1-1-6-7-1 (you will be in GCF) now pick GSM/(E)GPRS/WCDMA REL 8 reboot phone here
step 6. input apn if you haven't already. menu key setting then pick more networks then pick mobile networks then access point name. then menu add new APN
(I checked to make sure my calls and data were working after this.. if they are not go back and make sure everything is exactly as above)

http://forum.xda-developers.com/show...530610&page=45 post #448

step 6) I went back to @Unknownforce's post and used odin to flash the MJA modem:

http://forum.xda-developers.com/show....php?t=2338919

step 7)(optional) I used odin to flash Philz touch found here:

http://goo.im/devs/philz_touch/CWM_A...ition/jfltespr

step8) Profit

To answer the simple questions:

Yes, I stuck with the stock MJA rom from @rwilco12 during the whole process, but im sure it could work with other rom and if it doesn't, just do the whole thing over I guess

I used the mdc modem while doing the unlock then flashed back to the MJA because I had no sound, the phone would not dial, and I could not get back into recovery (something about unauthorized Samsung blah blah blah...)

I could not get into the service mode main menu for anything using the MJA modem(I tried like 20 times) but it only took me 2 tries on the MDC modem but it might work for you on the mja modem

I used the at&t straight talk sim card to do this but im sure more companies will work

I only have a sprint s4 so I do not know if this method will work on other phones

And that's pretty much it, if any question, you can ask and I will try to help but remember I am not a developer or anything so for the most part you might just have to google it or just try it

Also a big thanks to user @locorecto.. he is the one that came up with these steps for it to work on his post here
http://forum.xda-developers.com/show...2486134&page=4 post #33


And of course the disclaimer: I am not responsible if something happens to your and I cannot guarantee that this will work for you but it did for me


And thanks again to these guys:
@locorecto
@rwilco12
@Unknownforce @autoprime @eheilner
@Phil3759
Last edited by NoobToobTony; 24th February 2014 at 03:03 PM. Reason: missed a word
The Following 4 Users Say Thank You to NoobToobTony For This Useful Post: [ View ]
 
 
24th February 2014, 02:47 PM |#2  
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Thanks Meter: 8
 
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Quote:
Originally Posted by NoobToobTony

This is my first post ever so ill make it sweet and to the point... And this is assuming you already have a rooted sprint s4 and know how to use odin

For those who have upgraded to the MK2 boot loader there is still away. I will tell you exactly what I did to unlock my phone and have it working perfectly..

step)1 If you are on the MK2 boot loader then NO you cannot downgrade to mf9 (I have tried several different times, several different ways) but fortunately you can downgrade to MJA, which will allow you to flash the MDC modem, so all I did was Odin @rwilco12's MJA file found here:

http://www.rwilco12.com/downloads.ph...Original%20TAR
(my phone did not boot after this I had to go into recovery and do a factory reset then it booted right up)

step 2) I signed into google and downloaded 2 files: #1 Build prop editor by jrummy apps inc. and #2 apn settings shortcut by saikoro

step 3) I used Odin to flash the MDC modem by @Unknownforce found here:
(after you flash the modem wifi will not work that's why I downloaded the build prop and apn apps first)

http://forum.xda-developers.com/show....php?t=2338919

step 4) I did the international sim unlock found on @autoprime's post here:

http://forum.xda-developers.com/show....php?t=2415587

or on youtube here:

http://www.youtube.com/watch?v=lawcT1qqnLA

step5) I followed @eheilner's steps to do the domestic unlock: (it took me a while to get into the service mode main menu so just keep trying until you will get it)

step 1. use an app to input apn or do it your self. build prop editor add ril.sales_code=lol ro.csc.sales_code=lol do not reboot.
step 2. enter service mode. *#0011# menu back menu select 0*
step 3. now you will be at main menu. pick 3 LTE
step 4. pick Pref mode set. then pick 1 GSM/WCDMA. (do not reboot)
step 5. go back to main menu then 1-1-6-7-1 (you will be in GCF) now pick GSM/(E)GPRS/WCDMA REL 8 reboot phone here
step 6. input apn if you haven't already. menu key setting then pick more networks then pick mobile networks then access point name. then menu add new APN
(I checked to make sure my calls and data were working after this.. if they are not go back and make sure everything is exactly as above)

http://forum.xda-developers.com/show...530610&page=45 post #448

step 6) I went back to @Unknownforce's post and used odin to flash the MJA modem:

http://forum.xda-developers.com/show....php?t=2338919

step 7)(optional) I used odin to flash Philz touch found here:

http://goo.im/devs/philz_touch/CWM_A...ition/jfltespr

step8) Profit

To answer the simple questions:

Yes, I stuck with the stock MJA rom from @rwilco12 during the whole process, but im sure it could work with other rom and if it doesn't, just do the whole thing over I guess

I used the mdc modem while doing the unlock then flashed back to the MJA because I had no sound, the phone would not dial, and I could not get back into recovery (something about unauthorized Samsung blah blah blah...)

I could not get into the service mode main menu for anything using the MJA modem(I tried like 50 times) but it only took me 2 tries on the MDC modem but it might work for you on the mja modem

I used the at&t straight talk sim card to do this but im sure more companies will work

I only have a sprint s4 so I do not know if this method will work on other phones

And that's pretty much it, if any question, you can ask and I will try to help but remember I am not a developer or anything so for the most part you might just have to google it or just try it

Also a big thanks to user @locorecto.. he is the one that came up with these steps for it to work on his post here
http://forum.xda-developers.com/show...2486134&page=4 post #33


And of course the disclaimer: I am not responsible if something happens to your and I cannot guarantee that this will work for you but it did for me


And thanks again to these guys:
@locorecto
@rwilco12
@Unknownforce @autoprime @eheilner
@Phil3759



after this is done once you can flash cm 11 witch runs android 4.4.2 and everything works fine. change the mobile network options to global-LTE/CMDA/EVDO/GSM/WCDMA. witch is default. so just pop in any sim and go.
15th August 2014, 01:41 AM |#3  
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Any chance this will work on a Sprint Galaxy S4 with baseband L720VPUFNAE I was told I would be able to domestic unlock so that I can switch to a different carrier.
15th August 2014, 07:41 AM |#4  
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Quote:
Originally Posted by b4u2

Any chance this will work on a Sprint Galaxy S4 with baseband L720VPUFNAE I was told I would be able to domestic unlock so that I can switch to a different carrier.

This is a similar thread to this http://forum.xda-developers.com/show....php?t=2530610

Yes, you can downgrade from NAE model to MDC model without go from MJK or what so ever. But setting is big headache.. pain in the butt.
18th August 2014, 07:58 PM |#5  
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Quote:
Originally Posted by b4u2

Any chance this will work on a Sprint Galaxy S4 with baseband L720VPUFNAE I was told I would be able to domestic unlock so that I can switch to a different carrier.

I'm pretty sure that unlocking phones is legal now in the US and therefore Sprint must unlock their device for you if you terminate the contract with them. You just need to give em a call after the contract ends. At any rate, give em a call before downgrading or messing with your phone.
10th September 2014, 01:31 AM |#6  
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Need Help asap
I am wanting to switch my Sprint Samsung Galaxy S4 over to Straight Talk can some one show me how to? And my contract is over so can someone please help me
10th September 2014, 02:19 AM |#7  
daniel4653's Avatar
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Quote:
Originally Posted by demonik74

I am wanting to switch my Sprint Samsung Galaxy S4 over to Straight Talk can some one show me how to? And my contract is over so can someone please help me

Follow the thread by ibmiller.
10th September 2014, 02:24 AM |#8  
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:'(
Quote:
Originally Posted by daniel4653

Follow the thread by ibmiller.

It won't let me follow your link please help
20th September 2014, 06:29 AM |#9  
Junior Member
Thanks Meter: 0
 
2 posts
Join Date:Joined: Sep 2014
Quote:
Originally Posted by NoobToobTony

This is my first post ever so ill make it sweet and to the point... And this is assuming you already have a rooted sprint s4 and know how to use odin

For those who have upgraded to the MK2 boot loader there is still away. I will tell you exactly what I did to unlock my phone and have it working perfectly..

step)1 If you are on the MK2 boot loader then NO you cannot downgrade to mf9 (I have tried several different times, several different ways) but fortunately you can downgrade to MJA, which will allow you to flash the MDC modem, so all I did was Odin @rwilco12's MJA file found here:

http://www.rwilco12.com/downloads.ph...Original%20TAR
(my phone did not boot after this I had to go into recovery and do a factory reset then it booted right up)

step 2) I signed into google and downloaded 2 files: #1 Build prop editor by jrummy apps inc. and #2 apn settings shortcut by saikoro

step 3) I used Odin to flash the MDC modem by @Unknownforce found here:
(after you flash the modem wifi will not work that's why I downloaded the build prop and apn apps first)

http://forum.xda-developers.com/show....php?t=2338919

step 4) I did the international sim unlock found on @autoprime's post here:

http://forum.xda-developers.com/show....php?t=2415587

or on youtube here:

http://www.youtube.com/watch?v=lawcT1qqnLA

step5) I followed @eheilner's steps to do the domestic unlock: (it took me a while to get into the service mode main menu so just keep trying until you will get it)

step 1. use an app to input apn or do it your self. build prop editor add ril.sales_code=lol ro.csc.sales_code=lol do not reboot.
step 2. enter service mode. *#0011# menu back menu select 0*
step 3. now you will be at main menu. pick 3 LTE
step 4. pick Pref mode set. then pick 1 GSM/WCDMA. (do not reboot)
step 5. go back to main menu then 1-1-6-7-1 (you will be in GCF) now pick GSM/(E)GPRS/WCDMA REL 8 reboot phone here
step 6. input apn if you haven't already. menu key setting then pick more networks then pick mobile networks then access point name. then menu add new APN
(I checked to make sure my calls and data were working after this.. if they are not go back and make sure everything is exactly as above)

http://forum.xda-developers.com/show...530610&page=45 post #448

step 6) I went back to @Unknownforce's post and used odin to flash the MJA modem:

http://forum.xda-developers.com/show....php?t=2338919

step 7)(optional) I used odin to flash Philz touch found here:

http://goo.im/devs/philz_touch/CWM_A...ition/jfltespr

step8) Profit

To answer the simple questions:

Yes, I stuck with the stock MJA rom from @rwilco12 during the whole process, but im sure it could work with other rom and if it doesn't, just do the whole thing over I guess

I used the mdc modem while doing the unlock then flashed back to the MJA because I had no sound, the phone would not dial, and I could not get back into recovery (something about unauthorized Samsung blah blah blah...)

I could not get into the service mode main menu for anything using the MJA modem(I tried like 20 times) but it only took me 2 tries on the MDC modem but it might work for you on the mja modem

I used the at&t straight talk sim card to do this but im sure more companies will work

I only have a sprint s4 so I do not know if this method will work on other phones

And that's pretty much it, if any question, you can ask and I will try to help but remember I am not a developer or anything so for the most part you might just have to google it or just try it

Also a big thanks to user @locorecto.. he is the one that came up with these steps for it to work on his post here
http://forum.xda-developers.com/show...2486134&page=4 post #33


And of course the disclaimer: I am not responsible if something happens to your and I cannot guarantee that this will work for you but it did for me


And thanks again to these guys:
@locorecto
@rwilco12
@Unknownforce @autoprime @eheilner
@Phil3759

Did you get your WiFi to work again? If so how?
21st September 2014, 07:18 PM |#10  
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Quote:
Originally Posted by Jeff5672

Did you get your WiFi to work again? If so how?

Once you are unlocked you will need to re flash the correct modem as that is what is breaking wifi
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