Develop Bugs

[Q] If I flash this rom, can i go back to my stock rooted 4.1.1

I have a quick question. I am on a stock rooted 4.1.1 att sgs3. I was curious if i flashed this rom/kernal,[ROM/KERNEL][4.4.2] Quantum 3.54 & QuantumKernel 3/7, would i be able to go back to my stock rooted rom if I wanted to? Thanks in advance.

Looks like you are trying to flash a custom ROM. Don't know much about these particular ROMs you mentioned but you need to your research thoroughly on custom ROMs before flashing. You may know most Custom ROMs don't come with their own bootloaders but still have to rely on a manufacturer's bootloader to run. You should, therefore, avoid any ROM that may update your bootloader because this is the only way that you would not be able to return to your previous stock version. If the ROM simply updates the system without mucking with your bootloader, there is no reason why you may not be able to return to stock.
I had an AT&T SG3 on stock 4.1.1 and I was able to flash KitKat (4.4) based CM11 and return to stock 4.1.1 without any hitches. Finally, whilst you are still on stock 4.1.1 I would suggest you take advantage of all the flexibilities offered by this Android version especially free unlocking before you begin tinkering with firmware.

So as long as I dont update my bootloader, I should be fine on going back to stock rooted 4.1.1? Thanks for the info!!
So how do i know what roms dont mess with the bootloader?

Most ROMS do not include an aboot file. I have flashed CM11, Validus, Slim, and Cyanfox and none of these altered the bootloader.
I suggest that you find a ROM you like, unzip the file, and look at the updater script to determine which bootloaders are required to install the ROM on your phone.

Ok guys, thanks for the tips. I just didn't want to get stuck on a firmware where i could not have root anymore or go back to a stock rooted rom.

SGH-I747 unlocked trying to root

Looking to root my SGH-I747 but I don't know if it's an at*T or t-mobile. Is there a way to tell? I'm buying it from ebay and it just says unlocked.

Look at the label located under the battery for the exact model.
The i747 is a non-AWS AT&T model.

oh okay cool thanks

I've been doing some research on rooting and romming the s3. If it's running 4.1 I dont have to worry about bootloaders and can install and roms without worry, but if Im running 4.3 then I can't mess with the boot loader right?

The stock 4.3 AT&T bootloader cannot be downgraded and, once you are on the 4.3 bootloader, you cannot use Odin to flash a stock ROM and recovery. You can install custom ROMs with a 4.3 bootloader, it's just that it can be difficult to get the phone working if you run into problems.
On a non-4.3 bootloader, you can use Odin. If you want to run a custom ROM that is not based on a Samsung ROM, you should be fine with a 4.1.2 bootloader and radio.

Cool thanks for clearing that up it makes a lot more sense now. Hope I get a 4.1 then the phones still in the mail.

[Q] can i flash older roms on my GS3

Ok so i am on 4.3 with bootloaders and modem, with a 4.3 rom
is it safe for me to flash a 4.1.2 rom and still keep the same modem and bootloader.
so for example i am rooted running a stock rom with a custom recovery, and i want to flash the rom 4.1.2 Axis (SDS) rom will it be safe for me to do so or do i risk the possibility of bricking my device.
NOTE:
I have bricked my device and used a method posted i think in the general forums of the gs3 to unbrick it, so if possible don't want to go through that experience again if you know what i mean

Leandre20 said:
Ok so i am on 4.3 with bootloaders and modem, with a 4.3 rom
is it safe for me to flash a 4.1.2 rom and still keep the same modem and bootloader.
so for example i am rooted running a stock rom with a custom recovery, and i want to flash the rom 4.1.2 Axis (SDS) rom will it be safe for me to do so or do i risk the possibility of bricking my device.
NOTE:
I have bricked my device and used a method posted i think in the general forums of the gs3 to unbrick it, so if possible don't want to go through that experience again if you know what i mean
Click to expand...
Click to collapse
Yes, it's safe - Just make sure you don't flash a older modem/baseband or bootloaders. Although, there's no reason to go back to 4.1.2, it was awful for our device. Then again, it's your decision!

Ok i just wasnt sure and i liked the rom because i had a fantastic experience with battery life and performance. Plus it has the v6 supercharger script which i dont know how to setup on any other rom my self
Sent from my SAMSUNG-SGH-I747 using XDA Free mobile app

[Q] Noob needing to go back to stock, help please?

I figure instead of pulling my hair out for three days wading through various methods and likely brick, I'd swallow my pride and ask.
Here's where I'm at: I rooted and flashed Carbon rom way back when, everything was working alright, but with time, things are slowly starting to come apart. Yesterday, it's come to the point it can't be ignored. My nightly is ridiculously out of date, but I just haven't wanted to mess with it anymore. I'm about ready to get a new phone and I want everything back to fresh stock to give to a family member. I don't know where to start and what instructions are applicable or out of date. Model: I747, Android version: 4.4.2
I think I'm done experimenting with the rooting business, it's been a ride. If I could get some clear instructions on getting this phone back to stock, I'd be eternally grateful.
Help me xda community, you're my only hope.

What bootloader is on your phone? This is important to know before trying to get back to a stock ATT ROM.

audit13 said:
What bootloader is on your phone? This is important to know before trying to get back to a stock ATT ROM.
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Hey there, thanks for replying! Bootloader says I747UCUEMJB.

Since you are on an mjb bootloader, that means you had the ATT stock 4.3 ROM on the phone.
Unfortunately, ATT never realased a stock 4.3 ROM or 4.4.2 ROM. These were only available via OTA.
There was a thread where a stock mjb ROM was compiled for flashing in Odin, but for some members, the flash resulted in a bricked phone.

I had a feeling that might be the case. What are my options here?

I would install a custom recovery and flash a custom rom. There are custom ROMs based on stock Samsung ROMs.

audit13 said:
I would install a custom recovery and flash a custom rom. There are custom ROMs based on stock Samsung ROMs.
Click to expand...
Click to collapse
This is the way to go. Since you most likely already have a custom recovery (assumed since you are running Carbon but verify first though), then it is just a matter of getting a new ROM. There are several custom TW ROMs based on 4.3 MJB. If you really want KK, you can flash the NE4 bootloader and modem along with a custom NE4 TW KK ROM. Please keep in mind that with both MJB and NE4 (KK) if you try to revert bootloaders, you will brick.
I am personally running S3RX 4.3 and have few to no issues other than what most people experience on stock anyway. Just have not had the time to move forward to KK as of yet.
Sent from my SAMSUNG-SGH-I747

Okay, so the bootloader is 4.3, but the Android version in settings says 4.4.2, how does that fit together? Just trying to understand what all this works.
Recovery is currently ClockworkMod. Since I'm planning on giving it to family, I'd like something that is as stable as possible, nothing fancy needed. What ROM would fulfill those needs?

aablee said:
Okay, so the bootloader is 4.3, but the Android version in settings says 4.4.2, how does that fit together? Just trying to understand what all this works.
Recovery is currently ClockworkMod. Since I'm planning on giving it to family, I'd like something that is as stable as possible, nothing fancy needed. What ROM would fulfill those needs?
Click to expand...
Click to collapse
Sounds like you are running a custom KK ROM in order to be using the 4.3 bootloader. A stock KK ATT ROM will not run on a 4.3 bootloader.
Before flashing to a custom KK ROM, make sure you are running the latest CWM. Carbon is a good ROM and should have reached a milestone build.

aablee said:
Okay, so the bootloader is 4.3, but the Android version in settings says 4.4.2, how does that fit together? Just trying to understand what all this works.
Recovery is currently ClockworkMod. Since I'm planning on giving it to family, I'd like something that is as stable as possible, nothing fancy needed. What ROM would fulfill those needs?
Click to expand...
Click to collapse
audit13 said:
Sounds like you are running a custom KK ROM in order to be using the 4.3 bootloader. A stock KK ATT ROM will not run on a 4.3 bootloader.
Before flashing to a custom KK ROM, make sure you are running the latest CWM. Carbon is a good ROM and should have reached a milestone build.
Click to expand...
Click to collapse
You are running the official 4.3 bootloader but an AOSP custom ROM. In the case of AOSP ROMs you can typically do this. As mention by audit13, if it was a custom ROM based off TW AT&T stock, you would only be able to run a modified TW 4.3 ROM.

[Q] Best way to get DOJC and root firmware flash or custom rom

Hello All,
I am currently looking at different ways to try and update my device to dojc or doj7. Right now it is on DOH6 and seems like I have a few random glitches with the way it works and crashes. I am rooted currently with engineering bootloader with a custom recovery. I am thinking of one of two paths and wondering what might be the better of the two options in your opinion.
First, create a firmware file to flash with Odin that does not have the bootload file in it and flash that. Then root the device again the same way I did with the DOH6 root method and engineering bootloader. Stay on that install from Samsung and just root it.
Second, install a custom rom with that new version as a base (I think I remember seeing some stock rooted roms). and then upgrade the modem only with odin. Not sure if there is anything else other that the modem that would need to be updated with Odin.
I am just not sure if that second option would work if the firmware is too different to work with it. Any opinions on which might be the better option? How have you been able to update to DOJ7 or DOJC and root without worrying about Knox? And input would be greatly appreciated.

Couldn't you just flash a custom Rom and flash the new modem with Odin?
Would that work okay guys? I think that should be fine and leave the bootloader on 5.0 engineering and it won't trip Knox.