> For the complete documentation index, see [llms.txt](https://docs.encedo.com/hem-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.encedo.com/hem-api/reference/api-reference/system/upgrade.md).

# Upgrade

- [Firmware](https://docs.encedo.com/hem-api/reference/api-reference/system/upgrade/firmware.md): These operations allow the device firmware to be upgraded by uploading a new firmware image over API. This includes integrity and signature validation allowing only a legitimate firmware to be install
- [Low level USB mode](https://docs.encedo.com/hem-api/reference/api-reference/system/upgrade/firmware/low-level-usb-mode.md)
- [Management app](https://docs.encedo.com/hem-api/reference/api-reference/system/upgrade/management-app.md): These operations (on Encedo PPA only) allow the build-in management application to be upgraded. This includes integrity and signature validation allowing only a legitimate application to be installed.