[Solved] Choosing Autocom China: Differences Between Green/Blue TCS MAIN V3.0, V6.0, V8.0 & Red/Silver Chips

Hello. I wanted to buy a car from china (ds cdp 150) for my own use. Can anyone tell me the differences between. Two plates green or blue plate TCS MAIN type: V3.0, V6.0, V8.0, red and silver chips. Which combination is the best to choose?

As far as the color is of any importance, I recently bought the one with a blue disc (Bluetooth version) and it crashed while uploading the firmware.
Works fine after repair. I do not know the details, but the person who repaired my device claimed that all Chinese have the same factory error - for PLN 50 the error was removed.
The one with the green motherboard. the Bluetooth version was bought by my friend. It also crashed while uploading the firmware. Fortunately, I found a way and was able to upload the firmware again.

Well .... For me, color doesn't matter. It remains to count on luck after purchase.

I bought vcds