You cannot install different models on the Pod 2.0. Perhaps you are referring to tones?

In any case, the manuals are available here:

Pilot's Guide:

http://l6c.scdn.line6.net/data/l/0a06007241704aa7b9825647c/application/pdf/POD%202.0%20Pilot%27s%20Guide%20(Rev%20B)%20-%20English.pdfhttp://

Advanced User Guide:

http://l6c.scdn.line6.net/data/l/c0a8090b14eb9404fb8507db90/application/pdf/POD%202.0%20Advanced%20Guide%20-%20English.pdfhttp://

Preset Chart:

http://l6c.scdn.line6.net/data/l/c0a8090b14eb8404fb895e0024/application/pdf/POD%202.0%20Preset%20Chart%20(Rev%20A)%20-%20English.pdfhttp://

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Download and install the Monkey program. Run this and it will show you what programs you can download and install (specifically you will need Line 6 Edit).

Line 6 Monkey (I am assuming you are on a PC with Windows XP) is available here:

http://line6.com/getrelease?rid=4223http://

(If your computer is something other than what I have assumed just go to http://line6.com/software/ and from the drop-down menus select Pod 2.0, Line 6 Monkey and whatever OS you are using).

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Line 6 Edit will allow you to download tones from http://line6.com/customtone/browse/pod20/ which you can then transfer into your Pod 2.0 using Edit. To do this you will need a MIDI interface. If you do not have one a cheap option is a USB to MIDI adapter. Line 6 recommend the M-Audio MIDISport Uno as a preferred option as this is known to work.

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Other helpful supporting documents:

http://line6.com/support/docs/DOC-4725

http://line6.com/support/docs/DOC-4728

http://line6.com/support/docs/DOC-4742