Symptom: While the MX-990 is connected to the PC, it fails to take program download.
- Remove the battery,
- Wait for 1+ minute
- Re-insert the battery
- Connect the remote back to the PC
- Wait 15+ seconds, then try re-downloading the program.
Please also see this newer article: Can't Connect or Download - MX-780, MX-790, MX-890 and MX-990 handheld remote controls