# Page Not Found

The URL `readme/theme-updates/upgrade-to-os2` does not exist.

You might be looking for one of these pages:
- [Upgrade to OS2](https://help.fluorescent.co/spark/general/theme-updates/upgrade-to-os2.md)
- [Migrate your theme](https://help.fluorescent.co/spark/readme/start-your-free-trial/migrate-your-theme.md)
- [Update your theme](https://help.fluorescent.co/spark/general/theme-updates.md)
- [Featured collection row](https://help.fluorescent.co/spark/pages/theme-sections/featured-collection-row.md)
- [Get started](https://help.fluorescent.co/spark/readme/start-your-free-trial.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://help.fluorescent.co/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://help.fluorescent.co/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/spark/general/theme-updates/upgrade-to-os2.md`)
- Use `Accept: text/markdown` header for content negotiation