SKP900 error when add tokens (fixed)

SKP-900 tokens run out, trying to add tokens follow the pdf manual provided. Power up the SKP900 key programmer but there was no any button options. The system enter into Main menu after pressing Yes button. But screen does not display any letters and will not proceed.

Update your SKP900 to newer version.  Current latest version goes to V3.9.

How to add free SKP900 tokens 
How to update SKP-900 key programmer