For details about the development board, compilation, burning, and image running process, see [Getting Started with Hi3516](../quick-start/introduction-to-the-hi3516-development-board.md). After image running is executed and the system is started normally, perform the following steps to install or uninstall the third-party application:
1. Store the unsigned application installation package and installation tool compiled by the IDE in an SD card. \(IP camera applications currently do not support signature.\) The installation tool is in **idev\_tools** in the directory where the image file is generated.
1. Store the unsigned application installation package and installation tool compiled by the IDE in an SD card. \(IP camera applications currently do not support signature.\) The installation tool is in **dev\_tools** in the directory where the image file is generated.
2. Run the **./sdcard/dev\_tools/bin/bm set -s disable** command to disable signature verification.
3. Run the **./sdcard/dev\_tools/bin/bm install -p /sdcard/airquality.hap** command to install the application.
