
Originally Posted by
badrax
VCDS 23.3.1 does not require a firmware upgrade (it will work with CB:4631) so VIIPlus loader for 23.3 will work but it will not be able to decrypt UDS messages.
In your scan log you will see something like this:
13697024 - Component Protection
U1100 00 [009] - No Basic Setting
[Tip-TNF 231499]
instead of:
13697024 - Component Protection
U1100 00 [009] - No Basic Setting
[Komponentenschutz keine oder falsche Grundeinstellung bzw. Adaption]
Confirmed - Tested Since Memory Clear
VCDS will of course know that you are missing the decrypt key and might do other strange things.
Every version of VCDS is using a different key that only a genuine interface can calculate.
The calculation is done by sending a MAC message to the external crypto chip and without this key it will be "impossible" to calc this response.
The response will have to be ripped from a genuine interface and hard coded into the VIIPlus firmware.
This is why VIIPlus loader need an update to fully work with VCDS 23.3.1
For VCDS 23.3.1 ENG the Challenge is:
0xFD, 0x9D, 0x98, 0x3B, 0xDF, 0x6B, 0x0E, 0x01, 0x01, 0x10, 0xEC, 0x79, 0x80, 0xB0, 0xEC, 0x76, 0xCE, 0x04, 0xC0, 0x01, 0xD8, 0x09, 0x85, 0x02, 0x09, 0x9E, 0x0E, 0x1E, 0x9D, 0x3C, 0x76, 0x27
and the response is:
0xED, 0x57, 0xB1, 0x21, 0xBC, 0xB0, 0x04, 0x72, 0xDE, 0x15, 0x02, 0xF3, 0x43, 0x79, 0x97, 0x10, 0x00, 0xCE, 0xE2, 0x6D, 0x30, 0x49, 0x0E, 0x1D, 0x46, 0xFD, 0xD6, 0xB9, 0xA9, 0x14, 0x3B, 0x87
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