Preparation to upgrade stock A5 assistant camera 3Q0 to 2Q0 for Travel Assist (TA)
I bought the 2Q0 camera and its heating pad with the help of Szymon. 3q0-2q0 adapters were bought from AliExpress with the help of Amir. Thanks to both of them
The 2Q0 adapters are made of Aluminium and are of excellent quality

I decided to upgrade the SW version of 2Q0 camera from
C/1301 to D/1421 version. There are also
D/1401-J/1423- G/1501,1505 - H/1602 versions.
15xx & 16xx versions are UNECE compliant.
Repinning from 3Q0 to 2Q0
Flashing the hanging camera in parking
First, I flashed the firmware loader(
2Q0980653D_0194_FBL), it flashed quickly
Next, the real fun begins. Flashing the firmware (
2Q0980653D_ 1421).
Terrible! it took 2hrs 31min to flash the firmware.

I wasn't expecting it would take so long! According to reports normally it would take 1 to 1.5hr to flash. I had to connect the car battery charger as well as the laptop charger. It is also possible to flash with a running engine and enough fuel. But it won't allow to crank the engine when already flashing in progress.
After 2.5hrs of anxious moments, the firmware was successfully updated. During the flash, I was getting a feeling that my VAS 6154 china adapter will brick the camera but it didn't

The stock dataset and coding remained unaffected by updating the firmware.
As expected only 3 errors remaining. Yeah CP error greeted me.. thank you VW
Uploaded the original unmodified T-roc dataset.
Only 2 errors remaining now, CP and calibration. I could have gone ahead with resolving both errors but I didn't. Did the check to see if the new camera will fit correctly with adapters. It fits snuggly. The assistant camera cover also fits perfectly over the new camera with adapters.
There is another super exciting upgrade coming up

for which I need to access VW online servers. I plan to club the 2Q0 CP removal at the same time. I have no intentions to get SWAP's for VZE, pACC etc.. practically all those features are useless in my country. I will be more than happy to just have working Travel assist (TA)
After all is said and done..3Q0 camera is back to its place for now
I will update as and when progress happens.