Runner versions

I am trying to make an update to the currently existing Twitch installer, which has some problems. I have made said updates and it’s now working on my system. The thing is the runner that I am using (4.12.1 staging) doesn’t exist as a downloadable version and is currently only installed on my system.

To make Twitch work as expected I have found that you need the above-mentioned version. Any suggestions on how to proceed?

Thank you for your time and patience!