Does anyone know how I would go about installing bad subsystems on my jb'd iPhone? I went into installer but couldn't find it. I thought I read somewhere that I need bad subsystems in order to use other software. Any help would be appreciated.
BSD Subsystem is already installed when you jailbreak your device and install Cydia. Installer's BSD Subsystem is broken and should not be used, due to *someone's* neglect to fix it. So you already have it installed. =]
Forget Installer. Forget RIPDev. Both of them are crap. Installer is no longer what it used to be. It barely works, and has almost no packages. You do not need UNIX Subsystems from Installer. Delete Installer and use Cydia.
And like I said before, you already have what you need (BSD Subsystems) if you installed Cydia. So there's no use in even worrying about BSD Subsystems. Just, trust me. Please.