# Page Not Found

The URL `installation/core-update` does not exist.

You might be looking for one of these pages:
- [업데이트](https://xpressengine.gitbook.io/xpressengine-manual/recommended-specifications/core-update.md)
- [문제 해결(디버깅)](https://xpressengine.gitbook.io/xpressengine-manual/recommended-specifications/core-debug.md)
- [라우팅](https://xpressengine.gitbook.io/xpressengine-manual/introduce/route.md)
- [요청](https://xpressengine.gitbook.io/xpressengine-manual/introduce/request.md)
- [응답](https://xpressengine.gitbook.io/xpressengine-manual/introduce/response.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://xpressengine.gitbook.io/xpressengine-manual/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://xpressengine.gitbook.io/xpressengine-manual/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/xpressengine-manual/recommended-specifications/core-update.md`)
- Use `Accept: text/markdown` header for content negotiation