Media Go (discontinued 2017) still works for PSP transfers on Windows 7/10/11. Here's the exact process:
.iso or .cso (compressed). Place in a PC folder./ISO/ or /GAME/ (for homebrew). Media Go handles this./ISO/.Only transfer games you own. Downloading ISOs you didn't purchase is piracy. Dump your own UMDs with UMD Dumper homebrew.