Download ProntoEdit Professional 2.4 from here. [Link: files.remotecentral.com]
It will run on Windows7 32bit with no issues. I've heard of folks running Win8 32 and 64 bit but may require VMWare or Virtual PC.
With regard of how to reset the pronto, download the latest PEP2 compatible 9600 firmware.[Link: files.remotecentral.com]
Now, to reset the Pronto, do a Complete Firmware Reload. Please review this post.[Link: remotecentral.com]