yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Mega] bvzxa3:
I would have believed you, but you mentioned the Sprint Note 2, and unless you actually soldered the sim card unit to the sprint version of the note 2, you cannot unlock the sprint note 2, you could only flash.
[Samsung Galaxy Mega] Ura535:
tell me where to begin device jumper sim cards in the galaxy mega sprint?
[Samsung Galaxy Mega] Dyablohell:
After 4 Mega that i bought, i belive mi6 is just a mith, i didn't find any of the megas with mi6:( sorry
[Samsung Galaxy Mega] hotker79:
the international unlock is done withow sprint http://xdaforums.com/sprint-galaxy-s5/general/sprint-samsung-unlocker-unlock-sprint-t2928250
[Samsung Galaxy Mega] ashikrobi:
Thanks great awesome!!!

Thanks guys, this tool really unlocks the sprint mega! Please download the app and unlock it. After a long wait we got the unlock. Many many thanks to the unlocker. I think bounty money should go to this developer.
[Samsung Galaxy Mega] hotker79:
domestic unlock tutorial please thanks
[Samsung Galaxy Mega] gamerchick214:
Did it really work? If yes pass the tool please i wantto buy a mega on ebay and sprint galaxy megas r cheaper than att

Thanks
[Samsung Galaxy Mega] ashikrobi:
gamerchick214 hotker79 has already posted the link of that thread. You will find the tool there. And yes it works but do not buy the phone if it has the newer versions of android, i mean if it has newer then NE4 rom.
[Samsung Galaxy Mega] hotker79:
yes i put the link aim got the international unlock i need the domestic one thanks
[Samsung Galaxy Mega] gmint7:
Extreme noob here.

Okay. So sorry to sound like I don't know anything. I have read this entire thread and am still not sure of what to do with my sprint mega. I have never tried to unlock a phone and I do not understand most of the jargin used here. =[ what is the difference between an international unlock and a domestic one? Please someone help. Lol. My email is georgia.rae7@gmail.com any advice would be greatly greatly appreciated. Please email me anyone! Thanks!
[Samsung Galaxy Mega] dboii42393:
help

Hey xda I'm having trouble trying to unlock my Samsung galaxy mega I've been reading thru this thread and nothing has worked for me I even tried to debug the service menu I got into the service menu to see if I can find my msl it comes up as 5333028 but I understand an msl code is 6 digits anyways make a long story short wanna unlock my gsm galaxy mega from sprint and flash it to boost mobile I heard its possible sprint shut my phone out idk wat to do I have a 450$ dollar phone juss using it as paperweight if anyone has a program or a step by step method to unlock this device I'll deff appreciate it if method works I'll deff slip 1000$ to the xda developers so they can manufactor an unlock utility for this plz anyone help thanks email me a method or program that can help doughboycruz@gmail.com
[Samsung Galaxy Mega] warriorpluto:
If you want to go to body mobile pay someone $50 to do it. No need for unlock
[Samsung Galaxy Mega] TechShui:
Domestic unlock

So can anyone please confirm a working domestic unlock for the Sprint Mega?
[Samsung Galaxy Mega] Ura535:
unlock GSM :good: Sprint Samsung Unlocker - Unlock any Sprint Samsung phone
[Samsung Galaxy Mega] TechShui:
That's an international unlock.

And I've read that thread, only thing that jumps out is [MENTION=5772787]ashikrobi[/MENTION] suggesting to follow the L720 Domestic unlock steps, which I will try.

Someone named [MENTION=1357260]NewTalk[/MENTION] says he's done it, I'm more interested in "HOW", and did it actually work. Sorry for being such a skeptic.

In one of your posts you say it has to be on MI6 modem? That is the only tricky part: Is there anywhere to download the MI6 modem, because the full firmware will soft-brick my device.
[Samsung Galaxy Mega] Ura535:
This unlock works on all modems 4.4.2,just install the application and click (unlock)

then reboot the device and use :good:
[Samsung Galaxy Mega] TechShui:
Thank you ura, I wish it were that easy, and in every other country, it is.

But in the United States we carrier lock our phones, Sprint is particularly bad about it. I'm hoping I will figure it out. I assume [MENTION=1357260]NewTalk[/MENTION] followed the L720 thread. I will post my results back here, just working on several things at once at the moment :silly:

---------- Post added at 07:29 PM ---------- Previous post was at 07:17 PM ----------

Well, I'm a "people". And I'm not focused on GSM variants, was your ROM containing an older bootloader because that would explain why it did not boot.
[Samsung Galaxy Mega] es0tericcha0s:
I successfully unlocked a Sprint Mega on 4.2.2 NA7 today.

Ran Sprint Samsung Unlocker app

Used Sprint S4 domestic unlock method (Hint: Use the Galaxy Tools app to get into the Hidden Menu - WAY easier than the dial code method)

Confirmed working with talk, text, data, and MMS with Cricket. They sent me the APN configuration profiles for data and MMS via text message so didn't even need to use the build.prop trick to get APN settings or via Galaxy Tools.
[Samsung Galaxy Mega] twanhines:
And this is was in the US yes?
[Samsung Galaxy Mega] es0tericcha0s:
Yes, Cricket is a US GSM carrier owned by ATT.
[Samsung Galaxy Mega] twanhines:
Did you have to run both the unlocker app then use the domestic unlock guide for this to work? Thanks!
[Samsung Galaxy Mega] es0tericcha0s:
Yes, that is correct. The unlock app gets rid of the invalid SIM message and allows for the phone to be unlocked for international use then follow the guide for the domestic unlock for the S4. Your results may vary if you are on a different build.
[Samsung Galaxy Mega] twanhines:
I'm on the same build as your mega, and when I get to the service menu, I see "no service". So then I hit the left soft button like the guide says and choose either key input or select and use 1 or 2, and have alternated between all combinations or 1 and 2 and using either key input or select with and without sim. Am I doing something wrong? Thanks in advance!
[Samsung Galaxy Mega] twanhines:
So I was able to fully unlock my mega by instead of using Soft menu Key>back>soft menu key>select/key input 1 or 2, I used soft menu key>back>soft menu key>key input>Q>soft menu key>key input>0000 then the service menu opened and I was able to follow the guide here: http://xdaforums.com/showthread.php?t=2530610&highlight=apn+settings

So I have talk/text/mms/data working on att. But I can't get my visual voicemail to work. I know you can change the number associated with the phone, but I need the msl to get to that programming menu. Does anyone have any suggestions on either getting the msl? Thanks!
[Samsung Galaxy Mega] TechShui:
Can I downgrade the modem?

Indeed my results are different, I'm on build 4.4.2 NJ1

My first thought is to downgrade the modem but those no place to get the NA7 modem.bin file from? Maybe you would be kind enough to dd your modem and I'll try flashing it.

Judging from previous experience though... what I probably should do is downgrade everything except the bootloader. But I'm not sure how to remove a bootloader from the tar file.
[Samsung Galaxy Mega] es0tericcha0s:
I don't have the phone, so am unable to do this for you, sorry. I just unlock these for people I come across that need my help. I found the tar file here:https://mega.co.nz/#F!Aod3nJya!E72FvgLfPG2_nZPV_a-9Aw though I can't recommend as I've seen someone post that they had an unknown baseband after trying to downgrade the modem. I'm not sure which build they were on or which modem they were flashing, but be warned this could very well happen. I could not find confirmation that reinstalling the 4.4.2 modem resolved that issue either so you've been warned. It might behoove you to try and extract the modem.bin and try just that though I've no way to test this theory - just that the L720T is like that.
[Samsung Galaxy Mega] shaharyaraziz:
This happened to me as well on 4.4.2 on NJ but I can confirm that re-installing the NE modem resolved the issue...... So far I have not been successful in unlocking or downgrading the Modem on 4.4.2 but then again I consider my self a Noob :)
[Samsung Galaxy Mega] es0tericcha0s:
Thank you for that confirmation as it is valuable info to me, and I am sure others. But once you downgraded, you weren't able to use the Sprint Samsung Unlocker app and the guide anyway despite the baseband being unknown? What did you try and where did it fail?
[Samsung Galaxy Mega] shaharyaraziz:
Well with the Baseband being unknown, the IMEI becomes Null so at this point nothing worked and I changed the modem back without further tries.
[Samsung Galaxy Mega] kokos76:
Hi! If someone still need a modem L600VPUAMI6 - Here is L600VPUAMI6 modem yadi.sk/d/Hhkbnr74du6So . I bought it on Ebay for special modem for $ 180. You can make a donation on my visa card #4120430018454492.
[Samsung Galaxy Mega] TechShui:
flashed through Odin right?

We have to get to the bottom of this. What if I dd the 4.2.2 modem.bin instead of flashing through Odin?

And why doesn't any modem stick??? My theory is its because of the locked bootloader but the fact that other phones like the SPH-L720T have locked bootloaders and their modems stick kind of shoots that theory out of the water. :confused:

I've been researching heavily and I notice the Sprint S4 mini has to have the tz.mbn downgraded at the same time as the modem.bin for it to stick... but Odin doesn't accept .mbn files... unless packaged as tar and based on my experience anything older than the NJ1 mbn files will FAIL the rev check in Odin.

Tbh, only one I've tried so far is the NA7 bootloader, that's the one that FAILED for me in Odin.
[Samsung Galaxy Mega] es0tericcha0s:
A lot of Samsung phones when you want to downgrade the modem, you need to flash twice before rebooting before it will stick.

Hopefully I will get another Mega in the next day or 2 that has 4.4.2 so I can experiment. With 4.2.2 it was easy enough. Just need to find the right combo for 4.4.2.
[Samsung Galaxy Mega] TechShui:
Yeah with the Note 3 you have to do that and pull the battery in between reflashing the modem.

You can also downgrade to an earlier 4.4.2 and even 4.3 modem.

With the mega there is no 4.3 they went straight to 4.4.2 but it seems [MENTION=3416413]shaharyaraziz[/MENTION] was able to downgrade his Mega to NE4? Maybe just maybe, that modem will allow the unlock to work

I hope either you or him will share the NE4 modem so I can try with my Mega :)

I'd rather avoid having to download the full firmware. But if I cant find one searching that might be my only choice
[Samsung Galaxy Mega] es0tericcha0s:
The newer modems for 4.4.2 can be found in the CM12 thread. I'm working on a Mega on NJ1 right now, but not making much headway.
[Samsung Galaxy Mega] es0tericcha0s:
Hate to be a bother, but can you upload the non-hlos.bin from the MI6 build as well? I'm wondering if the unknown baseband issues are a result of mismatching modem.bin and non-hlos.bin files. Hoping anyway...
[Samsung Galaxy Mega] es0tericcha0s:
So I am having trouble figuring out the locations for install for the modem.bin and the non-hlos.bin. The modem.bin appears to be here:

/dev/block/mmcblk0p1

I tried using the dd commands to install the modem.bin from mi6 and from na7, but no luck. Both corrupted the baseband. I'm not sure where the location of the non-hlos.bin partition is at though. I tried to dd the modem.bin from na7 then used Odin to install the na7 non-hlos.bin and either way just gets the baseband corrupted though no errors when flashing.

I think I am stuck for now. Tried downgrading every which way with MI6 and NA7 with modem.bins and the non-hlos.bin files. dd, Odin, and attempted to make a CWM flashable modem - nothing has worked. Luckily I got my baseband and IMEI back.
[Samsung Galaxy Mega] kokos76:
This is full backup of vpuami6 rom yadi.sk/d/9E3pQXhKe6MAQ without any changes. Only su installed. I used philz_touch_6.48.4-meliusltexx recovery to make this backup.
[Samsung Galaxy Mega] es0tericcha0s:
Thank you for your time and effort. Downloading now. Not really holding by breath though. This has been a difficult one to crack. I even found a 4.2.2 rom based off of the i9205 that booted and then retried flashing the JB modems to see if there was some oddball chance that the JB rom could register the JB modem differently, but still corrupted the baseband. Luckily these things seem to be pretty tough to completely lose the baseband because after all the stupid stuff I have tried so far, was able to get it reworking by reflashing the KK modem or the whole KK system and undoing the unlock process.

Think something is corrupted with your upload. I am unable to open the 7z file. 7zip is telling me it can't open it as an archive. Tried renaming to zip and got the same message. Seems to be the right file size so don't think it is a bad download, though hard to tell without the md5.
[Samsung Galaxy Mega] 2strokenut:
I've been dicking around with this and only recently discovered this thread. This kinda confirms what I've been running into, the damn baseband will not downgrade. Kind sucks though, since every mega I see at the shop nowadays is on 4.4.2 it seems.

If anyone needs help with this domestically on 4.2 pm me and I can help.
[Samsung Galaxy Mega] es0tericcha0s:
Yea, and unfortunately, there aren't a lot of devs out there that are experts at this kind of thing as most just focus on apps and roms. This kind of stuff is a whole nother ball game. I've tried every combo of OSes and modems and ways to install said modems without any signs of success. This is the only Samsung Sprint phone I have had this issue with. Both S4s and Note 3s can downgrade without breaking everything (though some combos of modems and OSes can reboot on the N3, at least it doesn't corrupt the baseband and IMEI). Not sure what's so different about this, especially since the phone menus and such are the same as the S4. Something to do with downgrading from the Spark modem I would guess.
[Samsung Galaxy Mega] kokos76:
I have no problem with this file at all. I am using 7zip 9.20 7-zip .org
[Samsung Galaxy Mega] es0tericcha0s:
I re-downloaded it and worked the 2nd time. Ultimately I don't think it's going to be helpful in downgrading the modem though.
[Samsung Galaxy Mega] lucky_515:
im thinking about buying a mega,thats in perfect condition still in the box..but the ad says may or may not have clean esn numbers,i asked for the numbers so i could call and confirm,they said they not giveing them out untill a buyer pays for device..so im gonna go ahead assume it is in fact bad esn..but the price tag would save me about 100 or more dollars..and if there is a way here to unlock the sprint sim..with a bad esn even,ill buy it..i dont know yet of the current installed firmware,i sent another mess asking for this info at least..or am i just wasteing my time with bad esn phone??
[Samsung Galaxy Mega] warriorpluto:
That's stupid for them not to give the numbers.It's bad then
[Samsung Galaxy Mega] es0tericcha0s:
Why this assumption? Unscrupulous people can certainly take the MEID / IMEI and use it for their own purposes. This seems like a reasonable, albeit very cautious approach to selling. As long as the sale is contingent on the fact it is clean and you have recourse for getting your money back if it isn't, I don't see the trouble.
[Samsung Galaxy Mega] roger439:
working mega on mk1

Hi all i am very new to this i have not posted in a very long time or not at all.I am a computer tech and bought a sph-l600 from a friend.Over a year ago.I joined this site in hopes of unlocking it to att based carrier in the usa.

I found very useful info here and after much trial and error i have it working completely.I debated posting this for about a week because i did not want to get involved in trying to exactly figure out how it was done.I had the help of a friend as well. I have it working on the mk1 baseband rooted with phil. su installed and ran ssu as well as a editor to add two lines to the build prop to allow editing apn with app called build prop editor only usable if rooted. I believe if corect my bootloader is not locked either but i started on a early baseband. i am thinking na7 but not sure. Is there anyway i can help everyone here out?
[Samsung Galaxy Mega] warriorpluto:
Yes any help to the others new people who may be looking for information. It's always appreciated.If you have a method please post in a new thread so you can follow and help anyone that's trying to unlock their phone.
[Samsung Galaxy Mega] warriorpluto:
Imei are posted all over ebay listings. Most of the time when someone on a local Craigslist ad not giving out the imei means that the phone was bad. That's 97% of the time. Luckily I had swappa to check imei on the spot as the sellers had no idea it was possible lol
[Samsung Galaxy Mega] es0tericcha0s:
Well, the people that give their IMEI freely like that just don't understand what someone could do with it. Otherwise, they wouldn't just be giving it out to whoever. I've never seen anyone list their IMEI on Craigslist in my area or the last one I lived in.
[Samsung Galaxy Mega] warriorpluto:
I know exactly what a person can do with it. I never said anyone on Craigslist list their imei. I'm saying if they refuse to let you check it or give out proof it's good then it's something wrong with it. Most people that run those imei scams would have a person to come to them anyway by listing fake phone unlock ads.
[Samsung Galaxy Mega] bvzxa3:
I was successful flashing an older modem to a rooted S4 to use SSu to unlock the phone. I have someone who has the L600 they want unlocked to AT&T because they got it cheap.

So even if I downgrade the modem to a 4.2 version, the baseband will become unknown?

I want to try it but since it's not my phone I don't need to hassle. But if I can get the older modem to stick and just use SSU I would be good to go. Sort of reminds me of how I unlocked the Sprint HTC One Max to work on T-Mobile.
[Samsung Galaxy Mega] Oscar_Romero:
I've been able to downgrade via a custom 4.2.2 rooted stock rom using CWM but when I flash the 4.2.2 modem it doesn't stick and automatically get a unknown baseband.

Is this due to the bootloader?
[Samsung Galaxy Mega] tripleogsilver:
YES!!! Simply called Sprint, told them

I was traveling out of the country and wanted to use a local sim, and after some bull****ting on their part they finally transmitted the codes. FYI by federal law as of 02/11/2015 all carriers are supposed to sim unlock their customers handsets upon request... check out this link: .fcc.gov/encyclopedia/cell-phone-unlocking
[Samsung Galaxy Mega] don bartolo:
Sprint S5 on GSM T-Mobile Signal -invalid simcard

you unlock sprint s5 for T-mobile ???
[Samsung Galaxy Mega] Chelle23:
Help

I will like to know how you did this
[Samsung Galaxy Mega] dboii42393:
yo

Hey I have a galaxy mega carrier is sprint I wanna sim unlock this how do I do that plz ive beeen stuck on this for about a year now
[Samsung Galaxy Mega] enelson2047:
Sprint Unlock Code

Yes!!!!!!!! I got my Sprint Mega 6.3 unlocked. To get it unlock you will have though Sprint, They will give you the unlock code. ONLY IF THE MIED IS CLEAN. It is built into the phone and you will need the phone number.
[Samsung Galaxy Mega] neocrypter:
How did you get it to work im trying to get my l600 domestic unlocked. sprint gave me the msl for the phone but i still get invalid sim when i insert my att sim. Though when i used adb to bring up the sim unlock window it says unsuccessful I've verified the code with sprint 5 times so I'm at a loss

.
[Samsung Galaxy Mega] ThaJuiceIncarnate:
So if it is unlocked would it be available to switch over to Verizon or no?
[Samsung Galaxy Mega] daniyyelgsm:
Unlocked one back in February using similar steps from the Sprint S4 and Note 3.
[Samsung Galaxy Mega] bigdad21071:
So has anybody been able to unlock this phone and if so what steps did you take?
[Samsung Galaxy Mega] CampRJ2:
I really could use this info myself. Just got CM12.1 installed and ready to give to my daughter, but need it to work with AT&T. Please tell me this can be done through this forum! Please?!?
[Samsung Galaxy Mega] Surgeman:
It can't be done..The Sprint version doesn't support the GSM band..Sorry...
[Samsung Galaxy Mega] shockazulu:
Yes you can use it for att and cricket. It's all discussed in this thread. But only of you have not ever upgraded to 4.4.2

Only of you are still on 4.2.2

I used a unlock service done over the phone and with my l600 connected to computer and they remote unlocked mine a few years ago. $40 idoneapps was there name.

But recently I updated to 4.4.2 and lost the unlock.

Emailed them and they said that 4.4.2 can not be done. They can only internationally unlock 4.4.2

Since then I found I can not truly go back to 4.2.2 again.

So I just bougt a att mega i527.

The l600 never got good signal or lte only 3g on att anyway.

The only problem is that att has locked bootloader so no flashing roms. But you can root and run xposed to customize the stock att rom yourself.
[Samsung Galaxy Mega] Eazye8:
Can anyone help me with way to unlock the mega
[Samsung Galaxy Mega] deebailrem:
Unlock Samsung mega

Help me please unlock my

Thanks
[Samsung Galaxy Mega] Gabriel51:
I just spent some time talking to Sprint about unlocking this phone.

They told me it was still active on an account?????? That's just about impossible, I guess maybe that's what they tell you because they don't want to unlock it?

They also told me that my current provider could provide the unlock information for this device??? I said, are you sure and they said yes.

So I called my provider and they said no way that they have no information on that device, which is what I thought.:p

I guess we are definitely on our own with this one.

Someone built a ROM that unlocked this device and I have it, however there were some data issues if I remember right? I need to try to find that thread again before I install it...
[Samsung Galaxy Mega] joem789:
I have successfully rooted and flashed my L600. Even better. I managed to follow the tutorials on this website to get my Sprint phone to use WCDMA and GSM. It will even see the AT&T network and attempt to register it. But it fails. And I still have the "Invalid SIM" message. I notice in the settings there is a Sim Lock setting with a PIN that was set by Sprint. I am guessing that if I could overcome that, then the SIM would unlock and the rest of the phone would then become the AT&T phone I want it to be. But I have not found a way to do that yet.
[Samsung Galaxy Mega] Ura535:
try this http://xdaforums.com/galaxy-mega/orig-development/sim-unlock-international-gsm-wcdma-sph-t2818162
[Samsung Galaxy Mega] ashikrobi:
Bro i think it's not possible to unlock this phone with code. Someone has to unlock it manually like sprit s4. I am saying this because i have not found any unlock code provider who sells code for SPH-L600. I am waiting for unlock.
[Samsung Galaxy Mega] Gabriel51:
I've checked all over myself.

I wonder if the hardware is really different in this device compared to a GSM phone?

I would flash a GSM factory TAR file if I know it would not brick my phone, just to see if it work...
[Samsung Galaxy Mega] es0tericcha0s:
It'll softbrick if it doesn't just fail when it gets to the modem part.
[Samsung Galaxy Mega] Gabriel51:
Have you done this?
[Samsung Galaxy Mega] es0tericcha0s:
Not on the Mega but on other CDMA Samsungs. It will know if it is not a compatible modem and fail, if you're lucky.
[Samsung Galaxy Mega] Gabriel51:
Were they GSM capable devices?
[Samsung Galaxy Mega] es0tericcha0s:
Yes. I literally do stuff like this for a living and I've done similar experiments and it won't work. Especially if the phone is on 4.3 or above.
[Samsung Galaxy Mega] vlindemeyer27:
could you kindly email this program. As i have tried the {back /"q"/ "0000" } method to unlock the service mode with no success. Or could you just post a link. Thanks a lot. Ive had this phone for 3 months now. Trying to crack it. Please help me out here. Email is vlindemeyer@gmail.com thanks in advance.