Preparing firmware

Complete the following steps when preparing application or bootloader firmware. Modem firmware bundles are already available in nRF Cloud, skip to Create a FOTA Update below and select a modem bundle from the dropdown.

1. Update the app/VERSION file. Increment the appropriate version component.

2. Build the firmware.

   Using the command line:

   west build -p -b thingy91x/nrf9151/ns # Build for the appropriate board
   

   Or use the nRF Connect for VS Code. See the Getting Started guide for details on building with the extension.

3. Locate update bundles in the output directory (app/build/):

   • build/dfu_application.zip - Application firmware update
   • build/dfu_mcuboot.zip - Bootloader update