# 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. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.encedo.com/hem-api/reference/api-reference/system/upgrade.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.