Default SMemo on Kitkat 4.4.2

Hi everyone,

I had a lot of .snb file (SMemo file) on my S4, but the rom that i installed has "SNote" and doesn't read .snb file... but my principal question is: On ORIGINAL 4.4.2 KitKat Samsung's Firmware there is SMemo or SNote? Because i think that SNote is a porting but i don't manage to find a rom KitKat with SMemo and the original Firmware from SamMobile is a .md5 file and when i open it with BetterZip i don't find any app like the normal rom that i download from xda..
I tried to install the old SecNote2.apk but it fc when i open it...

Thank you and sorry for my english..
Nokia 3310 - Nokia 3510i - Nokia 3200 - Nokia N96 - iPhone 3GS - Galaxy S4 (Project Chaos v2.3.0)