Bootcamp 6.0.6136 appears to be an older Boot Camp driver package. For safety and compatibility, obtain drivers from official Apple sources, verify file integrity, back up systems before installing, and use caution with third-party archives.
Apple typically doesn't provide a direct "one-click" link for this specific sub-version on their main Support Downloads page. Instead, you can use these methods: The "Official" Way (Apple Software Update) Bootcamp 6.0.6136 Download
Your Mac’s firmware is too new or too old. Fix: Boot into macOS → run Boot Camp Assistant → Action → Download Windows Support Software. That will fetch the correct version for your Mac (which may not be 6.0.6136). Bootcamp 6
After 6.0.6136, Apple began shifting focus toward T2 chip Macs and eventually Apple Silicon. This version represents the last “universal” driver set for several pre-T2 Macs. Instead, you can use these methods: The "Official"