Go to dolphin-emu.org and get the latest Beta or Development version (stable is outdated).
If you're looking for a paper (document) related to "Sonic Riders: Zero Gravity" for the Wii in ISO form, it's likely referring to documentation that might include game guides, manuals, or technical papers. These documents might be found online in PDF format.
Disclaimer: I am not a lawyer. This information is for educational purposes only.
Sonic Riders: Zero Gravity is considered abandonware by many archival communities because Sega no longer sells it digitally, and physical copies are out of print. However, copyright law remains strict.
You should only download the ISO if:
We do not condone piracy. This guide assumes you are creating a backup of your legally owned disc or downloading a copy where the copyright holder has permitted distribution (which is rare for Sonic titles).
Search for "Sonic Riders Zero Gravity HD Texture Pack Dolphin." Fans have manually upscaled all the menus, HUD elements, and character portraits to 4K resolution. This makes the game look like a native PC release.