Should I upgrade the firmware? (5.5.0 - 5.5.53)

[rotation]

Hello,

I have two DS-2CD2142FWD cameras, both with firmware 5.5.0 170725.

There is a newer firmware available, perhaps no newer will come because discontinued.
Firmware: IPC_EN_STD_5.5.53_180730(2x12FWD 2x22FWD 2x42FWD 2x52F)

Should I upgrade?
Should I not?
Should I go to a very specific firmware, which appears to be "better"? (I currently have no troubles with the cameras)

 

[rearanger]

DS-2CD2185FWD-IS2017 just done this to 5.6 190507 cause it crashed ...just look at the notes and see if the improvements are any good for you

think 5.5.5 is latest for your cam