Solution: One of your ROM filenames contains illegal Unicode characters (e.g., emoji or right-to-left marks). Move your ROMs to a temporary folder, scan incrementally, and rename the offending file.
The interface presents a clean dashboard showing all detected emulators with color-coded statuses (Green = Latest, Yellow = Update available, Red = Missing dependencies). Check the boxes and hit "Update All." The tool handles the rest—downloading, extracting, and replacing executables. new download emupgrade v2 26 137