ADVICE - Updating 4.2 to 4.3 Softmodded Wii ?

Hi All

Have a softmodded wii that i done a while back with the softmod that required a game (before letterbomb).

I need to update it to 4.3e.

What is the process ?

Do i just update online and re softmod with letterbomb ??

Is that safe ? Or is there an easier way ??

Cheers