The IDWedgeBT Application Updater requires a special programming cable, and a PC with a serial port, or a USB->Serial adapter. The application has on screen instructions on how to perform the update.
The quick guide contains screen shots of the procedure, along with information on the recommended USB->Serial adapter.
IDWedgeBT Application Upgrade Quick Guide.pdf
Download the archive below and extract/unzip to a directory on your PC, there is no installation process, simply run the application from the directory you extracted the archive into.
The IDWedgeBT SPP Users Guide is available at the following link:
IDWedgeBT SPP Users Guide Version 3.3.pdf