make a backup of important PS4 data

hi guys! I've been reading some random stuff on repair.wiki about broken PS4.... and got some kind of feeling that something about to happen with my ps

it's currently running fine with esp32 based JB on 9.00 fw and I'm happy now...

but bad things always happens suddenly so i decided to find out how to backup important data of ps4 system, before it is happened

since PS4 is jailbreaken on 9.00 ps . uart can be enabled with ease. I have usb2uart converter... and solder skills

but I want to ask tech savvy peaople, who had practice repairing broken PS4, which data has to be backuped to external disk (eg my nas)

that can be used in future to more easily restore device back to life, if/when something bad happens, and I'll see some kind of "RGB light of death "

mine is PS4Pro cuh7200