yea, directly update to the latest version... It won't be a problem...! And i would suggest you to use gaia to load backups as it has a hardcoded payload which makes it more stable... Load only those games from multiman which gaia is not able to load... That is what i recommend.. rest is on you.
Thanks I've updated them. GAIA Manager and MultiMan are updated to the latest version now.
Do I need other pkg to optimise playing backup games? I noticed there's BDEMU in downloaded MultiMan rar. Any other pkg files that I need to install?