I discovered my Blimp OSD Tool is quite old, version 3.2.
It's so old, in fact, that it refuses to run, saying
"Version Expired, Please Update Your Software".
So, I found this thread:
Latest version appears to be 3.7. Following the download instructions,
I was directed to a forms page which doesn't have any content.
I tried three browsers and two operating systems, no joy.
Are there new instructions to download Blimp OSD Tool updates?