This "Universal" system applies mostly to the 3560-X and later. The classic 3560s largely stuck to the distinct image model (IP Base vs. IP Services) until the end of their support life (12.2(55)SE was the final widely recommended release for many).
Navigate to the specific model.
Once you have the .bin file:
This is an archive file (like a .zip ) that contains the IOS binary, the HTML/WebView files, and directory structures. cisco 3560 firmware download
Cisco announced end-of-life (EOL) for most 3560 models years ago. The final IOS releases are often "maintenance deferred" meaning no new security patches. If your 3560 runs a critical function, consider isolating it or planning a migration to the Catalyst 9200/9300 series. For lab use or non-critical networks, a stable, fully patched final IOS image (like 15.0.2-SE11 for the 3560G/E) remains a safe choice. This "Universal" system applies mostly to the 3560-X