Binary File Format

Binary File Format

The paramconfig, fw_update, and bin_update files contain a binary image preceded by a 32-byte header.

Header Format

The following table depicts the layout of the header fields:

Header Bytes	Field Description
0 – 3	Unknown
4 – 7	Number of bytes in binary image
8 – 11	Unknown
12 – 15	CRC-32 of image
16 – 19	paramconfig version (in paramconfig file only)
20 – 23	Unknown
24 – 27	Unknown
28 – 31	CRC-32 of header bytes 0 – 27

The known fields are unsigned 32-bit integers represented in little-endian format.
For bin_upgrade and paramconfig files, the CRC-32 algorithm uses an initial value of 0.
For fw_upgrade files, the CRC-32 algorithm uses an initial value of 0xffffffff.