Before you install the SDK, make sure that you have all required tools installed. See Getting started page (for nRF52840) or Setting up the development kit (for nRF52832) for more information.

To set up your environment:

1. Download the repository file nRF5_SDK_x.x.x_xxxxxxx.zip (for example, nRF5_SDK_v15.2.0_1a2b3c4.zip) from nRF5 SDK product website.
2. Extract the zip file to the directory that you want to use to work with the SDK.
3. Install the nRF5 MDK:
   • If you use Keil 5, open an example project. Keil will then prompt you to install the nRF_DeviceFamilyPack. If Keil does not prompt you, open the Pack Installer, click the Check For Updates button, and install the latest nRF_DeviceFamilyPack.
   • If you use Keil 4, double-click the nRF5x_MDK_x_x_x_Keil4.msi file in the extracted directory to install the MDK.
   • If you use IAR, double-click the nRF5x_MDK_x_x_x_IAR.msi file in the extracted directory to install the MDK.
   • If you use GCC, the MDK is delivered with the SDK and does not need to be installed separately.