Ah, I finally understand... You're saying there is another micro controller on the board that actually does the CMOS configuration at power up... and that unless we can change this micro's config, or figure out how to tell it to pass the right commands through to the CMOS, the easiest way is to add a second micro to the I2C (or whatever) bus is connected to the CMOS directly, and send the configuration command after power up/initial config.
Looking at the board, I see two other ICs... One is a PIC16F1829:
http://ww1.microchip.com/downloads/en/DeviceDoc/41440B.pdf
The other is an unknown chip with 10 leads and an "AVV N BW" marking.
Based on the micro's data sheet, I have marked the possible I2C connections. I will test with a multimeter to see if I can figure out which one goes to the Maxim serializer, and then one of the other 2 must go to the CMOS.
View attachment 311967
View attachment 311968
In related news,
@artsci and team said we should be good to switch over the HSD connectors from the C coded blue ones to the universal Z coded ones. I am working with a few connector vendors now to get quotes and lead times.
I have an email into my local SC to get one of the black "A type" cables that I would need to test a "post" APE install on my AP2 model s as soon as it gets in and I mod my proto switch to accept it.
And a reminder: don't forget to PM me and get your deposits in for the CAN bus kit if you're interested in one. So far I have received 7 deposits, with interest expressed from another 6 of you. I have started ordering parts to build them so we can (hopefully) get them to you by the time the camera switches are ready. So if you want one, don't delay!
FYI, the long lead time items are the PCB, which
@Kalud is currently working on the design/layout for, and the OBD connectors, which I have just ordered a pile of.
The most expensive component in the kit, the $99 comma panda, are in stock as of current writing. If we get enough preorders I might be able to organize a small bulk discount.