1e41f4b71Sopenharmony_ci# Running on the Device<a name="EN-US_TOPIC_0000001054809161"></a> 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ciBefore you install the application and run it on the development board, install the DevEco Device Tool by following operations provided in [HUAWEI DevEco Device Tool User Guide](https://device.harmonyos.com/en/docs/ide/user-guides/service_introduction-0000001050166905). Burn OpenHarmony into the development board, and run it on the board. For details about how to compile, burn, and run an image, see the [Quick Start Overview](../quick-start/quickstart-overview.md). After the image is running normally and the system is started properly, perform the following steps to install or uninstall the application: 4e41f4b71Sopenharmony_ci 5e41f4b71Sopenharmony_ci1. Store the compiled unsigned application installation package and installation tool in an SD card and insert the SD card into the development board slot. The installation tool is in **dev\_tools** of the directory where the image file is generated. 6e41f4b71Sopenharmony_ci2. Run the following command to disable signature verification, which is enabled by default for application installation: 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci ``` 9e41f4b71Sopenharmony_ci ./sdcard/dev_tools/bin/bm set -s disable 10e41f4b71Sopenharmony_ci ``` 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci3. Run the following command to install the application: 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci ``` 15e41f4b71Sopenharmony_ci ./sdcard/dev_tools/bin/bm install -p /sdcard/airquality.hap 16e41f4b71Sopenharmony_ci ``` 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ci The **dev\_tools** directory stores the installation tool, and **airquality.hap** is the application installation package. Replace it with actual the package name. 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci4. After the application is installed, touch the application icon on the home screen to enter the application. 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci **Figure 1** Home screen<a name="fig146361926155516"></a> 23e41f4b71Sopenharmony_ci  24e41f4b71Sopenharmony_ci 25e41f4b71Sopenharmony_ci5. \(Optional\) Uninstall the application. 26e41f4b71Sopenharmony_ci 27e41f4b71Sopenharmony_ci Touch and hold the application icon on the home screen, and touch the uninstall button in the displayed menu. 28e41f4b71Sopenharmony_ci 29e41f4b71Sopenharmony_ci 30
