^^^ do an auto scan the car with VAGCOM and under address 19 you will see something like this (taken from an auto scan report VrStu did of my car when he fitted the bluetooth): -
Address 19: CAN Gateway Labels: 1K0-907-530.lbl
Part No SW: 1K0 907 530 L HW: 1K0 907 951
Component: J533 Gateway H07 0052
Revision: H07 01 Serial number: 300308F2022338
Coding: ED817F0E4002020003
Shop #: WSC 01279 785 00200
No fault code found.
The "L" at the end of the part number is the version