I am having hard time updating my rooted 4.2.2 MF2 i537 to newer firmware.

[Themer1]

my device specs are: I537 / 4.2.2 / UCUAMF2 /

I have installed Safestrap so far and looked for a guide that would help me to update my rooted phone from this state but I was unable to find can you please link one or guide me.

All help is appreciated tnx

Edit: To be more clear I just want to update my 4.2.2 to 4.4.x or higher version.

 

[Devo7v]

my device specs are: I537 / 4.2.2 / UCUAMF2 /

I have installed Safestrap so far and looked for a guide that would help me to update my rooted phone from this state but I was unable to find can you please link one or guide me.

All help is appreciated tnx

Edit: To be more clear I just want to update my 4.2.2 to 4.4.x or higher version.

Always start by reading the stickied posts.
http://forum.xda-developers.com/galaxy-s4-active/general/galaxy-s4-active-firmware-guide-t2892445