Open solo firmware 4.0.2 for green cube

Would someone post the procedure of update from stock cube with firmware 4.0.1 to green cube?

I responded to your post in the Solex group. Have you installed the cube into the copter yet?

Thanks matt! Not yet install green cube, running good at stock cube using open solo 4.0.0 firmware. If I want to use green cube, what is the next procedure? Update firmware first then replace green cube or replace green cube then update firmware?

Install the green cube. Then load the ArduCopter Green Cube package from Solex.

Thank you, I will try that