raspberry pi re-flash

I bought a new Handibot Adventure edition and it came with the dev version. I want to upgrade to the latest version but it seems the updater package is not installed as I can't connect to it on port 81. I tried installing the updater from fabmo GitHub site per their instructions but still am unable to connect. During the process I somehow broke something in the wifi settings as I can no longer connect to my router.

I'm wondering if my I'm best off re-flashing the pi to the original but didn't find the files on your website or instructions on how to do it.

The most recent raspberry pi image can be downloaded here: [drive.google.com]
You can flash the image to the SD card using a free tool like Balena Etcher.

There will soon be a new branch of software versions -- we had been releasing software to run on the Intel Edison -- which is what the latest version on github is. With the edison being discontinued, we've switched to the pi. It's a nice step up in performance, but requires a different build of the software.

Is there a version for a Pi 3 B+?