Does not make sense to force a unfit square post into the round hole.
(Actually one can't even buy a camera with I2C or serial interface to the outside world. The manufacturers understand the market and technology, don't they.)
@Unbioctian take a look at /usr/lib where the library shared objects are kept and /usr/include where the header files are kept. You'd notice some library objects do not have corresponded header files. The i2c C library is available for you and is called libonioni2c. The source code can be found in our GitHub repo. For more info on compiling C/C++ on the Omega please refer to our official documentation and i2c C Library
Not exactly sure what fixed it, but after trying to connect again it gave me the option to skip, after spiking it connected to the Wi-Fi and downloaded & installed the firmware update. All working now.
@Caleb-Wiggins well, hologram does offer their own usb cellular device which is similar to the unit that they sold through onion kickstarter. but, i can't speak to if the device works well with the omega2[+]