I corrected the screenshot in the version I made a few pages back.
The name should be the same.
Yes, that's the version I tried. I'm using sx os - I put your files on my chip - it worked but the background picture doesn't show up. When I put the Argon payload back on my chip - the background shows up just fine - so it's not a background picture issue. Only issue is when using your uf2 file. I'll attach the file I used that works fine for me.