# Page Not Found

The URL `keypal-tutorial/hardware-wallet/3.firmware-upgrade/3.1pc-upgrade/3.1.1win-pc` does not exist.

You might be looking for one of these pages:
- [KeyPal Firmware Upgrade Support (From 1.4 to 2.1.04)](https://keypal.gitbook.io/en/user-manual/keypal-plus/firmware-upgrade/v2.1.04.md)
- [KeyPal Firmware Upgrade Support (From 2.1.04 to 2.1.07)](https://keypal.gitbook.io/en/user-manual/keypal-plus/firmware-upgrade/v2.1.07.md)
- [KeyPal Firmware Upgrade Support (From 2.1.07 to 2.3.00)](https://keypal.gitbook.io/en/user-manual/keypal-plus/firmware-upgrade/v2.3.00.md)
- [KeyPal Firmware Upgrade Support (From 2.3.00 to 2.3.02)](https://keypal.gitbook.io/en/user-manual/keypal-plus/firmware-upgrade/v2.3.02.md)
- [KeyPal Firmware Upgrade Support (2.3.04)](https://keypal.gitbook.io/en/user-manual/keypal-plus/firmware-upgrade/v2.3.04.md)

## How to find the correct page

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

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/en/user-manual/keypal-plus/firmware-upgrade/v2.1.04.md`)
- Use `Accept: text/markdown` header for content negotiation