Extract this to your sof folder.
Open the SoF_HTTP.cmd file to launch SoF.
Make a desktop shortcut of it etc.
Uses powershell to download a map zip and extract it.
SoF_HTTP.cmd launches http_listener.ps1.
http_listener.ps1 starts SoF.exe.
Put user/sofplus/addons/http2.func into SoF_Install/User/sofplus/addons dir.
It downloads zip files from https://github.com/plowsof/sof1maps.
Extracts them.
Only downloads if .bsp does not exist already.
Test by deleting your maps folder if you dare.
Feedback welcome.