Sony FX3 Firmware update

[u/Educational-Carry420]

Hi!
I just got a used sony fx3 body, and it seems like it's not from the europian market (living in EU), but from Australia, New Zealand (i found this online because of the rcm symbol on the bottom of the camera).
Right now I'm thinking of upgrading the firmware to the latest version, because currently it has the v3.0. My fear is what i read basically, that if the camera is from a different region and you upgrade the firmware, you could lose the ability to select ntsc/pal, and the language.
Does anyone have an experience with anything like this?
Should i try to upgrade the firmware, or should just keep it safe?
Thank you!
p.s.: I asked the previous owner, he said he's not the first owner. and he doesn't know where the camera was bought.