Can I remove the authentication chip (ATECC608A) from a custom build?

Official Hardware Nano Family Nano 33 IoT
3

There is a easier way to test this. I2C uses pull-up resistors to create the HIGH signal on the bus. The signal is not actively driven HIGH. You can simply connect the pin SDA/A4 to GND to disable I2C communication without damaging the device.

Then you can test all your WiFi stuff for any dependencies on the ATECC608A.

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