i was looking into portablizemii and it sais you can only download it at firmware 4.3u but my wii is at 4.1u and i cant figure out a way to update it please help
You can update your wii by connecting it to the internet at home. Usually by doing that it will check for updates. Otherwise, make sure it's connected to the internet and look for "check for updates" in the settings.
First off, read the rules: No double (includes triple posting).
second off, there is a setting in Priiloader that is probably keeping your console from updating. Hold Reset during boot, go to settings and make sure are allowing the console to update.