Which board you are connect to PC?
To work with our DD2.0, you need either APP2.0 board + BNO055 shuttle. For this connetion, BNO055 is work under I2C interface. so both PS1 and PS0 should be tied to GND.
also the RESET should be released to make sensor enter boot loader mode.
This is the easiest way to connect your sensor to our DD2.0 UI.
Another connection is BNO USB stick which actually is a reduced version as APP2.0 + BNO055 shuttle board. And it is not so easy to rework.
So i suggest you to use APP2.0 with DD2.0 for your BNO055 FW upgrade.
... View more
