yashsingh1/xdaforums huggingface dataset:
[Upgrading, Modifying and Unlocking] daishi4u:
Yes it does work, but the only thing that doesn't work is mobile data. I have been trying to solve this for days now...Yes I've replaced the APN file that is in the /system/etc folder and changed the build.prop to reflect the TracFone carrier and stuff instead of Cricket. Anyone have any ideas? It's the ONLY thing not working and it's starting to get frustrating....I'm not new to Android and making roms and stuff so feel free to explain it in a complicated way haha
[Upgrading, Modifying and Unlocking] evertking:
The themes alwayzplain ported for the centura.. not sure if they would work.

But the 4.1.2 ROM work? Well all but data?? Hmmm
[Upgrading, Modifying and Unlocking] daishi4u:
Yeah I'm running it right now :) where do you think daddy366 got the one he's working on for our phones?... The picture he posted then deleted was from THIS rom :)
[Upgrading, Modifying and Unlocking] evertking:
Lol... well and I know its a silly question but did you try and reprogram your phone?

---------- Post added at 09:40 AM ---------- Previous post was at 09:36 AM ----------

Does anything need changed before flashing?
[Upgrading, Modifying and Unlocking] daishi4u:
Yes I did try and no go. YES! You MUST delete the radio image in the zip and the lines that install it in the update script or it will hard brick your phone. Trust me, I tried lol. Now I have a new phone to show for it haha
[Upgrading, Modifying and Unlocking] evertking:
OK.. I think I got it. Here we go! ;)
[Upgrading, Modifying and Unlocking] daishi4u:
Good luck :) you'll like it, it's a LOT faster than ics is on this phone...
[Upgrading, Modifying and Unlocking] evertking:
Yes it is.. hmm wonder why data don't work?
[Upgrading, Modifying and Unlocking] daishi4u:
Pretty sure it has to do with the kernel not fully communicating with the modem...but I've been trying to get it to work for days now...
[Upgrading, Modifying and Unlocking] cowboyenvy:
This issue has to be somewhere in the communication between the radio, android, now not sure if that would be a kernel module, or if that is library file, if it's a library file, it shouldn't be too difficult to replace. the other possibility is in the qcom init scripts, not sure if you've tried pulling all from the 4.0.4 system and dropping them into the 4.1.2 ROM..

though truthfully you've probably already looked into those options.

The one thing I will state, is that for whatever reason when I attempted to flash 4.1.2 via the nudeluvin22 4.1.2 backup and a modem of amf1 the phone got stuck in a boot loop.

CowboyEnvy
[Upgrading, Modifying and Unlocking] cowboyenvy:
do you still have the 'hard bricked' phone or was it returned?

CowboyEnvy
[Upgrading, Modifying and Unlocking] daishi4u:
I still have it... Think it can be saved?
[Upgrading, Modifying and Unlocking] cowboyenvy:
should be able to.

a modem.bin/img is basically a raw DD dump, you have your current phone with an unwritten modem parition, the sch-r740c should support boot from SD and in theory so should yours.

basically, what I need to know now is if you can still access CWM/download mode, if not we can try for a SDCARD boot option.
[Upgrading, Modifying and Unlocking] daishi4u:
No, it just gets stuck on the Samsung screen. I can't even access it with adb...
[Upgrading, Modifying and Unlocking] ufo8mymunky:
All that was tried weeks ago............;)
[Upgrading, Modifying and Unlocking] daishi4u:
...but did you guys edit the kernel and put all the services in that are needed for data as well as putting the required scripts in the etc folder? That's what I'm going to try next... I WILL get it working lol..
[Upgrading, Modifying and Unlocking] ufo8mymunky:
we pretty much have the same attitude. lol we are going to get it to work...it's just a matter of when.

im not sure about the kernel but i know many other things were tried.
[Upgrading, Modifying and Unlocking] Nightmare121:
I tried using this to root my phone however after i load the pda and click start after awhile it says:

<OSM> All threads completed. (succeed 0 / failed 1)

what should i do?
[Upgrading, Modifying and Unlocking] cowboyenvy:
What file what phone what version
[Upgrading, Modifying and Unlocking] Nightmare121:
I fixed it but when I go to install the zip it says signature verification failed install aborted how to fix that

I have root access but that concerned me.
[Upgrading, Modifying and Unlocking] cowboyenvy:
You have to install CWM to flash the zip files, otherwise use Odin to flash the system tar ball, if your rooted you need to rename the recovery patch file or boot into CWM immediately after Odin flash or lose CWM when the stock rOM boots
[Upgrading, Modifying and Unlocking] bigbosskaydee:
I had that problem too
[Upgrading, Modifying and Unlocking] cowboyenvy:
Where the two of you able to resolve your flash issues?

Have you been able to successfully install CWM?
[Upgrading, Modifying and Unlocking] Nightmare121:
Yes I got it.
[Upgrading, Modifying and Unlocking] Unjustified Dev:
[MENTION=4267913]cowboyenvy[/MENTION]

[SAMSUNG OSRC COMMENTS DELIVERY NOTIFICATION]

♦ classification : Mobile Phone ♦

♦ model name : SCH-R740C ♦

Dear Customer,

We are pleased to provide you the source code of SCH-R740C.

You can download the source code from the site below: http://opensource.samsung.com

(search by SCH-R740C)

Thank you.

Sincerely yours,

Jb kernel source is now released :D I asked a while ago but hey it's online now
[Upgrading, Modifying and Unlocking] cowboyenvy:
Woot!!! Should be helpful in getting CyanogenMod going!

Sent from my naked 4.1.2 sch-r740c
[Upgrading, Modifying and Unlocking] daishi4u:
If anyone is still on 4.0.4 then could I get one of you guys to pull your config.gz file from /proc and upload it somewhere. It would be of GREAT help towards porting 4.1.2 to the Centura :)
[Upgrading, Modifying and Unlocking] cowboyenvy:
Will backup, and drop back down to 4.0.4 and pull for you if you think that will help
[Upgrading, Modifying and Unlocking] daishi4u:
Thanks a lot! I tried installing your phone's 4.0.4 but it wouldn't boot... Weird huh? Seeing how jelly bean works fine except data... Yes I did install the boot image as well, so no idea why it didn't work
[Upgrading, Modifying and Unlocking] cowboyenvy:
Hey passed out last night, so I did not get much done, however I did find out that I cannot just downgrade the system /boot images for the phone, I'll have to drop the 404 radio image as well, and unfortunately I did not have time to complete that this morning. So it will have to wait until I get home
[Upgrading, Modifying and Unlocking] daishi4u:
Actually don't worry about it I found one floating on the internet that someone backed up :) thanks though
[Upgrading, Modifying and Unlocking] cowboyenvy:
Rodgers that, I assume you so not need the configuration. Gz from 412?
[Upgrading, Modifying and Unlocking] daishi4u:
Nope I got it :)
[Upgrading, Modifying and Unlocking] Nick_73:
That unbricking software... Where is the original source?
[Upgrading, Modifying and Unlocking] cowboyenvy:
Source Code

The 'original source' for the unbricking software I'm pretty sure is 'closed' from Samsung (the creator/distributor), the original release is from Samsung, the source code for the firmware written to the smart phone by the software is available from http://opensource.samsung.com/ search for SCH-R740C the download you want is the R740CVVBNA5 (Android 4.1.2).

Unfortunately, your question is either a bit vague, or a bit mus-informed.

Any 'software/firmware' derived from AOSP (Android Open Source Project) is open source, however; it is release where applicable under the Apache license, which allows for closed commercial elements to be released as binary files w/o source code. I.E they are not required to release the entire platform, only the components that fall under another OSL (Open Source License) that does require the release of source with any distribution.

Hence why you can pressure a company into releasing kernel source code but not necessarily into releasing the specific drivers needed to compile from source..

Also the OSL does not and arguably cannot include 'original elements' of code not derived from source initially released as Open-source. Thus someone can release a binary 'module/library' with an open source kernel without giving you the code necessary to compile the module/library yourself.

This is also the reason someone can release closed source software that uses writes handles etc open source software/code. IE Samsung is under no legal obligation to release the source code to software they produce that writes the android operating system to the device, just source for the open-source components that fall under and OSL that requires source distribution.

Anywho, I have gone off on a bit of a tangent, but hopefully I've answered your question, or at least made it evident why you question cannot be answered in the way you want.

CowboyEnvy
[Upgrading, Modifying and Unlocking] Nick_73:
Haha u mostly answered my question. I just wanted to know because I could maybe use one for the Centura to unbrick it if needed
[Upgrading, Modifying and Unlocking] cowboyenvy:
It may be possible to unbrick your Centura by creating 'similiar' odin flashable tar files (if they do not already exist) with the binary files, basically take a look at the official tars their individual composition (contained files) and recreate the files using the binary block devices from the centura..

It is my understanding that the radio img from the discover from the centura will hard brick the centura, so I wouldn't recommend using this tool..

From what I can see however; this is just basically a glorified Odin..

CowboyEnvy
[Upgrading, Modifying and Unlocking] Spawman:
Just a little bit of help.

Hi guys, I was wondering if you would help me a little bit. I had my phone rooted for the past couple months, had a CWM on it. Two nights ago the battery died and I did not charge it. But when I did, my phone was soft bricked. When my phone would brick before, I would use Odin and flash the files from this link:

http://xdaforums.com/showthread.php?p=39420121

One obvious problem I had was that my phone is SCH-r740C, on 4.1.2, R740CVVMI1

The files on the link were not for my specific phone.

So when I tried to use them again to fix my phone, two nights ago, my phone still would just get a black screen after the samsung screen.

I found your thread here and my eyes popped open. Someone was finally doing something for SCH-R740C.

*******I decided to follow the instructions in the very first post in the thread*******

My Android System is slightly different now,(newer I guess) and I cannot connect to my 3g network, only can connect to WiFi

Can someone help my get my phone's internet back so I dont have to connect to Wifi all the time?

Sorry for the noob language but I am learning still and I can provide more details if needed.
[Upgrading, Modifying and Unlocking] cowboyenvy:
Did you flash the modem as well as the system 4.1.2, IE check your baseband, last 4 should match your version. If it does not there is a modem.zip file in a previous post of this thread for download and instructions in the thread for successfully flashing the modem.bin from shell/adb

Cowboyenvy
[Upgrading, Modifying and Unlocking] Spawman:
I did not flash the modem, my baseband is R740CVVMI7

I am not sure hot to flash the .zip files. or the .7z files. I was reading on how to sideload, now I thinking that's what I need to do.

Am I on the right track here? Think you could walk me trough this sometime?

I read through the thread completely and couldn't find clear instructions. Sorry for the noob **** again but I really want to get the hang of this.

---------- Post added at 03:42 AM ---------- Previous post was at 03:37 AM ----------

And yes I did flash the system via odin/pda.

After that I flashed------> CWM-recovery-amazing3gcri-eng.tar.md5
[Upgrading, Modifying and Unlocking] cowboyenvy:
Ok, well you can download the stock 4.1.2 or naked 4.1.2 via CWM (either sideload, with ADB push, or by placing the update.zip file on the sdcard). personally I would drop one of them to my sdcard (this would give you on the go recovery) it will automate the process.

Or you can follow these instructions:

http://xdaforums.com/showpost.php?p=49883113&postcount=86

CowboyEnvy
[Upgrading, Modifying and Unlocking] Spawman:
Wow, this is awesome! I had no idea what I was getting into. Turns out I never had CWM recovery until now. AND your system is sick!!!!!! Ill be up all night playing with this! COOL SH*T!!!! Everything works! and, just wow, good job man!
[Upgrading, Modifying and Unlocking] webspyder:
Stock Rom

The stock rom can be found here

www​.samsung.com/us/support/downloads
[Upgrading, Modifying and Unlocking] MR20878:
A friend of mine has this phone and wants me to unlock it. If the procedure above is correct and has been proven to work, I will upload a copy of the rom to my dropbox and post it. Again, only if the above procedure allows for this phone to be unlocked will I do this. So, if there is anything I need to know please state it now. Thanks.
[Upgrading, Modifying and Unlocking] A1narchy:
do u still need anything from r740c on 4.0.4 stock

Im getting ready to root this device then update without rootkeeper or survival via superuser ...im on crickets 50 plan and have not depleted through my data limit so it will be connected full network (as i suspect previous uploads of this device are causing problems from being in disconnected state/reduced bandwidth/network coverage (and also perhaps the prl since i do believe that would be location specific... My prl is 45610 (san diego) network usually is EvDo-rev A:8

Baseband R740CVVMI1

kernel

3.0.8-1256583 se.infra@SEI-30 #1

Build IMM76D.R740CVVAMI1

It keeps attempting push of software firmware update however my settings do not all for it as I must approve anything before it updates with my google account.

So i need to root and will have access to laptop (win 7)and I have my own method for rooting devices that has no involvement of roms or clockwork mod please tell me exactly what u need me to perform to make a stock firmware or backup image please if in case you are still on the hunt and before I root and update or vice versa.
[Upgrading, Modifying and Unlocking] cowboyenvy:
we have a 4.1.2 recovery utility from Samsung, and 4.1.2 seems to be better/more stable than 4.0.4, though I suppose if you wanted you could create a odin recovery with all partitions.. (basically disect the recovery utility's tar files and mimic them for 4.0.4)

CowboyEnvy
[Upgrading, Modifying and Unlocking] angelic.spectra:
Fairly noobish to this

Okay, so I've read through the entire forum, but have only understood half of it. I am good with linux and windows, which will help, and i've poked around Odin once in the past (I believe I was unbricking a tablet)

So ... here's what I'm looking at:

Desktop: Linux kaname 3.2.0-58-generic #88-Ubuntu SMP Tue Dec 3 17:37:58 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Phone:

SCH-R740C purchased 9/13

Baseband R740CVVNA5

Android 4.1.2 (was installed using Samsung's upgrade too offline about a month ago)

The phone has never been rooted or modded

Cricket rep looked at the phone about 3 weeks ago and said it looked fine to him.

Now, I know that doing this -will- void the warrantee ... I don't much care, because I'm about to void it by throwing it out a fifth story window.

I can follow the basic directions on the first post, but seeing as the files linked there specify different basebands (due to 4.0.4, or different hardware configuration? That I don't get) I didn't want to start without some feedback to make sure i'm doing it all right.

Alternatively, if there's files that someone wants from my phone before I start, with a bit of help I can get them for you.

My end goal is a leaner operating system. I'm normally using between 70-90% memory (at best 65%) and while I know that some is OS files, I suspect a lot is bloatware, and Cricket/Google apps that I never use. Since they're mostly listed in the market, I'll just readd them later.
[Upgrading, Modifying and Unlocking] cowboyenvy:
Installing cwm via Odin and then naked rom by cwm will give you a stripped down android, install supersu for root access and then use triangle away to remove custom flash flag.

We have the 412 recovery from Samsung so getting stock files is easy.

The files listed here are for your phone, 4.0.4 cannot it seem be used with the 4.1.2 modem but other than that you should have limited or no problem.

Sent from my naked 4.1.2 sch-r740c
[Upgrading, Modifying and Unlocking] angelic.spectra:
I'm feeling relatively silly at this, but there's a few spots I still get lost on. I took the directions and commented on each step to help highlight where I got lost.
[Upgrading, Modifying and Unlocking] cowboyenvy:
K, first, are you wanting 'stock' with root or something that's already been partial stripped if partially striped, you want:

Odin V3.07.zip

Naked ROM 4.1.2 Preview update.zip for CWM amazing3gcri_unsigned_020214_231354.zip

it has to be installed via CWM (custom recovery)

CWM-recovery-amazing3gcri-eng.tar.md5

so your process is:

1. Download the Odin Flashing Application package, the tar.md5, and the zip file on this post Extract Odin to a known location and copy the tar.md5 files to the same location

2. transfer the zip file to the SDCARD of you phone

3. Right click on the .exe file inside of the odin folder and select “Run as Administrator”

4. Now that odin is running:

5. Uncheck Auto Reboot

6. CLICK ON THE PDA BUTTON

7. browse to the appropriate sub directory and select CWM-recovery-amazing3gcri-eng.tar.md5

8. Press Start.

DO NOT DISCONNECT, UNPLUG, PLAY WITH ANY BUTTONS, OR CLICK ANYTHING ON EITHER THE PHONE OR COMPUTER UNTIL ODIN HAS FINISHED FLASHING CLOCKWORK RECOVERY ON YOUR PHONE.

9. To boot into recovery, turn off the phone, now press and hold the volume up button, press and hold the power button, wait for phone to boot to recovery, release both buttons.

10. install zip from sdcard amazing3gcri_unsigned_020214_231354.zip

11. reboot

enjoy naked rom

CowboyEnvy
[Upgrading, Modifying and Unlocking] DuceTheTruth:
I've been on the black screen of death for MONTHS now and this thread has gotten EVERYTHING working again!!!!!!!!!

I even got a GS3 after this...rooted running various ROMS with no problems at all. Let me say this, I must be some sort of a true idiot because since day one I thought my phone was the 730M variant...I was always under the assumption that the 740G was the trackball model so I never bothered with those threads.

So why today when I'm in the bathroom on my own personal time..(TMI I kno) ..I look at the back of the phone with the cover off and at the top it says R740???!!!!....I'm thinkin wtf???? I COULDNT have been downloading/flashing the wrong files all this time???!!!

Well I guess I have because after seeing that..Google brought me here....and now I have a WORKING Galaxy Discover!!....after all these months.

I love this site I swear and all the Developers involved.
[Upgrading, Modifying and Unlocking] deathnet:
Odin not working!

Okay Odin is not working for me it fails after setup connection...

I was just wondering if i have to be in a certain mode or not?

Edit: Nevermind i tried the download mode and i think its working but just a suggestion

Add into the Instructions about putting the phone in download mode and how to do it if they dont know also.

Thanks Cowboy envy and all who helped make this possible!
[Upgrading, Modifying and Unlocking] cowboyenvy:
original post updated to include download mode in instructions
[Upgrading, Modifying and Unlocking] deathnet:
Roms for SCH-R740C

Are there any other roms for this device?
[Upgrading, Modifying and Unlocking] donthateme702:
Cowboyenvy im having problem with naked rom,if i have to turn phone or after reboot apps take while to show up on homescreen.says empty then about 5 mins later show up? Kno what might cause this?

Sent from my SCH -r740c Naked Rom 4.1.2 using Xparent Blue Tapatalk 2
[Upgrading, Modifying and Unlocking] cowboyenvy:
Seem to be having the same issue, as a general guess I would assume it is lagging on loading the dalvik cache, will try deleting my cache files and see if that will help.
[Upgrading, Modifying and Unlocking] cowboyenvy:
Wiping the dalvik cache seems to have helped boot is still a bit leggy, but that really isn't likely to change unless we can get a custom kernel over clock and better goveners
[Upgrading, Modifying and Unlocking] juajaime:
Thanks for this!
[Upgrading, Modifying and Unlocking] juajaime:
Works great!
[Upgrading, Modifying and Unlocking] jenndunitagan:
e-signature verification failed?

Hi i have rooted my phone (sch-r740c) using odin with the files provided in the first posting. I also put the amazing file provided for the stock as well as the cwm naked rom after the first didnt work also using odin. When i boot into recovery using the rom nanager and the manual way it boots into the stock 3e recovery menu. I am able to locate the cwm files when i go to apply update from external storage. When i select the cwm it says e-signature verification failed. Installation aborted. Please help!

Also originally before even wanting to root, a friend gave me a sd card bigger than the onr i had. Exvitedly i put it in my phone and when turning it back on it went past the samsung screen and then nothing. Black screen. Would stay on that for hrs. So i rooted it (it works now) and thats where the above problem comes in. But also all over while browsing different apps its constantly saying /boot and /recovery partitions not found. Why? How do i fix this? Also dont know if it helps but on the home screen And menu above all icons it displays the following in yellow..

PDA: R740CVVBNA5

PHONE: R740CVVNA5

CSC: R740CCOMBNA5

H/W: R740C.01

CAL DATE: 2013.11.22

SMD: 01P, PBA: 04N, CAL: 07P, FINAL: 11N

UN: CS502FFAE1AF1A0

REAR CAM: LSI_S5K5CCGX_NONE NA

FRONT CAM:

TSP: 0x12 0x12

TSK:0x12 0x12

BAND: EVDOA_A, CH: unknown

UART: unknown, USB: unknown

Someone help!!!!
[Upgrading, Modifying and Unlocking] TheCyberQuake:
Works for a little while

All of the items install just fine, but after a random amount of time (Once it was a full day, another time it was a measly hour or so) it just fails. The OS loads and I get to the home screen, but after about an hour or so everything freezes. I can tell the phone is still slightly responsive because I have the Show Touches option enabled under Developer Options, and that shows up as registering touches. I let it wait to see if something will happen, but it just reboots and starts the proccess over. Flashing again fixes the problem temporarily until it happens again at a random time

For now I have reset to factory default because it was unusable before.
[Upgrading, Modifying and Unlocking] novacheck:
Hey guys, my wife want's to unroot her R740c. We have both been looking for ways to do it, and feel stupid that we have came up empty handed. What are the steps to unroot this phone?
[Upgrading, Modifying and Unlocking] novacheck:
Please correct me if I'm wrong, but will I follow the same steps in the first post, except use the Stock-recovery-R740CVVBNA5.tar.md5 instead of Stock-boot+system-R740CVVBNA5.tar.md5 for step 7? Also, for step 9, what recovery would I use? amazing3gcri_stock_4_1_2.zip?

I just don't want to brick this phone, it is the only one we have.

Or, is it really as simple as using the Samsung Simple Upgrade Tool?
[Upgrading, Modifying and Unlocking] donthateme702:
Could someone post mms.apk for this and thr stock keyboard.apk id appreciate it.

Sent from my SCH -r740c Naked Rom 4.1.2 using Xparent Blue Tapatalk 2
[Upgrading, Modifying and Unlocking] DuceTheTruth:
This was my cure for the black screen of death
[Upgrading, Modifying and Unlocking] novacheck:
Well, after more research I have figure out most of what I need to do. Except for step 9 of the OP's directions. I am unsure of what recovery file I need to install. I can say, for what it is worth, that the phone was originally rooted using these exact directions. I guess that it doesn't matter too much, Cricket states that they won't be supporting this phone by the middle of next year as they transition to the 4g network.