better way to download iso?

I’ve downloaded the qnxrtp.iso from both tucows and the qnx site more
than a half dozen times, but each time, the checksum doesn’t match.
Before I thought to check the checksum, I wasted one CD by burning the
iso image onto it, only to experience boot problems after install.

Does anyone have any ideas on how I could download this iso image
properly? I’d appreciate any suggestions.

Thanks!

Edith Hand
Advanced Technique Development Division
Environmental Technology Laboratory
NOAA/CIRES