There is an entire folder in the Files section of the JP1 Users Group dedicated to adding a JP1 connection to various remotes. The instructions vary from remote to remote. See the reference link below for the documents specific to each remote. If you have any specific questions about the documentation in the Files/Hardware section, you should post them to the JP1 Message area.
Did the documentation in the Files section listed below resolve your
download problem?
Yes, I have now successfully completed a download
from my remote.
No, I have confirmed that my connection has been added correctly but I am still having problems.
Reference Links
http://groups.yahoo.com/group/jp1/files/Hardware/ – Directory in the JP1 Users Group containing documentation about adding and troubleshooting problems with user added JP1 connections.