Index of /rio
Each release folder contains all the software for the release on that date, including the relavent firmware file.
Normally you will download the most recent release.
If you have previously downloaded an entire folder you may want to only download what has changed or what you need.
The CHANGELOG.txt explains what has changed in each release folder.
You may obtain further assistance from Bentek Support at 587-350-5195 available Monday-Friday 8 am to 5 pm Mountain Time (MT).
Also see the Bentek Support website at https://www.scadalink.com/support.