Yeah the instructions are not clear. They're on the github repo[1] linked in the header.

1. Install Chrome Dev: Ensure you have version 127. [Download Chrome Dev](https://google.com/chrome/dev/).

2. Check that you’re on 127.0.6512.0 or above

3. Enable two flags: chrome://flags/#optimization-guide-on-device-model - BypassPerfRequirement chrome://flags/#prompt-api-for-gemini-nano - Enabled

4. Relaunch Chrome

5. Navigate to chrome://components

6. Check that Optimization Guide On Device Model is downloading or force download if not Might take a few minutes for this component to even appear

7. Open dev tools and type (await ai.languageModel.capabilities()).available, should return "readily" when all good

[1]: https://github.com/ryanseddon/FFprompt