Console Security Certificate
The Console Security Certificate is used by the Xbox 360 as the format of all RSA signatures generated by it. The total length of the certificate is 552 (0x228) bytes.
|0x0||0x2||bytes||Public Key Certificate Size|
|0x7||0xB||ascii string||Console Part Number|
|0x18||0x4||int||Console Type (0x02 for retail, anything different is devkit)|
|0x1C||0x8||ascii string||Certificate Date of Generation|
The console type field can be very strange, especially with older pre-1888 dashboards, for example two different 1838 keyvaults identify their console type as 0x80000002. If you want to check if something is devkit or retail, I'd suggest something like: