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Flatpak, ARM64: ColdOpen-0.1.0-alpha.3-aarch64.flatpak, 6.3 MB.
If it doesn't start in a moment, download it here.
Next: install it
- Install it:
flatpak install --user ColdOpen-*.flatpak - Run it:
flatpak run io.github.theyungstump.coldopen
The full steps are in Install, with how to check the file against its checksum.