Secpack 2.0

This is the security in the files sent to the X-Gold 608.

Sections=

The file contains sections like structure below

struct section_header { unsigned int id; unsigned int size; unsigned int sub_id; };

followed by the data. The size define the header size(0xC) and the size of data

Section ID

0xCF8 -- Header
0x2 -- Footer
0xB -- Memory Map
0x10 -- File Description (type (EEP, FLS, ...), ...)

Header

fls and eep have a 0xCF8 header on the file

0x634--Memory Map
0x714--Descriptor
0xCD4--Post secpack pointer to name
0xCEC--Data length

Data

You know what this is

Footer

Files also have 0x8D4 footer before the loader

0xB4--Traditional Secpack

Loader

This has two loaders, a bootrom loader which loads at 0x80000 and a bootloader loader which loads at 0x86000