# Upgrade

- [Firmware](/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](/hem-api/reference/api-reference/system/upgrade/firmware/low-level-usb-mode.md)
- [Management app](/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.