The cache is a temporary storage area used during the DFU process. It can hold multiple partitions (pools). The ID number of the partition determines the CACHE_POOL ID in the SUIT manifest.
For more information about CACHE_POOL in SUIT, see SUIT components.
The following command uploads the SUIT raw cache file dfu_cache_partition_1.bin to the cache pool with ID 1 on the device connected to the serial port COM7 on Windows (run nrfutil device list to check the serial port name for your OS):
nrfutil suit upload-cache-raw --serial-port COM7 --cache-file dfu_cache_partition_1.bin --pool 1
The --pool option is always required and its value must match the DFU cache partition defined in the devicetree source file.
This command uploads the given binary file and produces no additional output.