please help me to backup or Dump my ROM for later Recovery via the Stock Bootloader

Hi,

I have a Samsung Galaxy S 5 Active SM-G870A (AT&T locked bootloader) Stock ROM KitKat 4.4.2, ROOTED!
No unlocked bootloader is available for the AT&T version!

Can you please help me to backup or Dump my ROM for later Recovery via the Stock Bootloader?
I have tried Titanium Backup but when I restore, a lot of settings and data are missing and I have to send hours to do it manually.

Is there a way to create an "update.zip" file which I can flash from Stock Recovery?
Or make a "myrom.tar.md5" file which I can use via ODIN?

Any help would be highly appreciated.

Thank you

 

Thanks for your fast answer Hadron . Since I made the mistake and purchased a device with a locked bootloader, I will have to rely on regular backup methods. As you say, I need a custom recovery to backup the ROM. I can flash stock, that works fine.

 

Thanks for your fast answer Jfalls63. Safestrap backup fails with: "cannot read boot.img" upon backup.
I will try Flashfire now

 

Flashfire didn't even manage to do the backup
I am now down to a method that was described in XDA=Developers but I am having trouble identifying the blocks for Kernel, Data and Recovery. I tried DiskInfo but no luck.
Please see anclosed Excel screen shot for details.

Thanks

 

I am on 4.4.2 and I want to stay on it. Maybe 4.4.2 is the problem?
Do you know which blocks are Kernel, Data & Recovery when you look at my screenshot?

 

Thanks for the fast reply. I did ask at XDA where I found the method. Unfortunately no answer.
Went to a bunch of other forums, no luck. Searched to PAY for help, no luck.
I am 99% close to my goal but last bit is missing. But I am not giving up!