I have previously written an instructions on how-to to toggle on & off Netatalk (an open source implementation of Apple’s AFP protocol) via BossPrefs. It’s here.
The good news is you don’t have to go through all the troubles of manual installation again. You can now install the toggle via Cydia in a jiffy. Just launch Cydia and search for the “Netatalk Toggle for Boss Prefs” package; it’s filed under the “App Addons” section.
Feel free to post your comments or ask your questions below.