Why is the firmware not open sourced?

We can provide source codes of the Micro Controller Unit code and firmware. As for the coding in the Secure Element chip, we will only provide access to the trusted members of the crypto currency communities and/or security industry to evaluate and audit all of our code and libraries. 

Furthermore, a few ongoing Black Box Tests have also been conducted by multiple independent companies to perfecting our codes. Once that is completed, we will provide open source codes for our wallet. The estimated time for that should be around the end of 2018.