Btc3111
I just bought from aliexpress front and reverse camera (only) from Duduauto.
My guess is they switch from Sony 307 sensors to Sony 662's (availability, and / or price, I don't know).
When I ordered mine, it was advertised as 307 sensors, but I received one of each (307 and 662). Both work on my Dudu7 head unit with latest firmware (250905).
Overall, I think they're pretty much the same, maybe the newest 662 is better in low light than the previous (from what I could see on aliexpress)
Anyway, last time I checked, all duduauto cameras sold on aliexpress are currently 662 sensors.
just my 2 cents.