4.6.1.8 Download Option

The -mdownload option conditions the Intel HEX for use by bootloader. The -mdownload-hex option is equivalent in effect.

When used, this option will pad data records in the Intel HEX file to 16-byte lengths and will align them on 16-byte boundaries.

The default operation is to not modify the HEX file and this can be made explicit using the option -mno-download. (-mno-download-hex)