I'd like to update my system to the 4.0 firmware before someone else in the house blindly does it, and to try out the new SD features. I've been reading through threads and guides, but I'm still not sure how to do it without risking my homebrew stuff. - I have the homebrew channel installed (though it is an older version) - I just installed USB loader 1.4 and the CIOS rev 10 that goes with it - I have firmware 3.3 or 3.4 (not at home at the moment to double check) - I have a drive chip installed So: - Is there anything else I need to install? - Will I loose any features? - Do I need to reinstall anything afterwards?