Hi everyone, sorry if i post in the wrong section but im new here and im in desperate need of help!

i got my Wii a few years ago, installed the WDX modchip today. updated to fm v3.0 and i downloaded GH 5 PAL and stuck it in and is asking me to do a system update. im affraid of doing it just in case i stuff it up. My Wii is v3.3E

should i update it? or something else? thank you