NOTE: This article requires your SYSTEM-1 to be updated to the latest version, available here: http://www.rolandus.com/support/by_product/system-1/updates_drivers/8786
This article will go over how to load "Soundpacks". Soundpacks are essentially Backup files acting as custom patches. They were used as a convenient way to share patches with other users before the SYSTEM-1 Software Librarian was released.
To view some Roland released soundpacks, check out the Downloads section of the SYSTEM-1 product page, here: http://www.rolandus.com/products/system-1/downloads/
The process of loading Soundpacks into your SYSTEM-1 is simple. Since they are Backup files, you need to perform a "Restore" function to get them into your machine.
You can view this process on page 3 of the update documentation, at this link: http://www.rolandus.com/support/by_product/system-1/owners_manuals/9022
NOTE: The latest version of the SYSTEM-1 expands patch capacity from 8 to 64. This also means you do not need to overwrite the original 8 when loading (restoring) the soundpacks into your SYSTEM-1. Simply rename the patches to a number higher than 8, and the sounds will be found in the following bank on the SYSTEM-1.