For older installers that fail to unpack, switching your file extraction software or configuring the default system opener via the Get Info panel will quickly resolve the issue.
If the file is stuck, open Terminal and try mounting it manually: hdiutil attach /path/to/your/Epson_xxx.dmg
: Best for portable, high-resolution document and photo scanning [2]. Epson EcoTank ET-8550
If you've followed the steps above and your printer still isn't working, you're not alone. Epson devices have a few known issues on macOS, particularly after a major OS update. Here are the most common fixes.