Hi Chris, Ken,
Alas there is no way one can control the browser's save file dialog behavior from scripting so we'll just have to live with that.
Thanks to your suggestions, I added details like version control visibility, eeprom file version number and worked on error reporting, making it visible when something goes wrong.
I also hosted the tool on Github since my home server was not reliable. You can find the new version hosted at https://yo6ssw.github.io/u3s-eeprom-tool/ . There is also a CLI tool link in the menu that redirects to the latest CLI tool release.
73! Adrian, YO6SSW