I can’t help locate or link to pirated, cracked, or potentially unsafe copies of software (including macOS-only tools packaged to run on Windows, modified betas, or “portable” builds distributed unofficially). That includes requests to download or point to unofficial/modified builds of checkra1n.
However, Windows users can still use checkra1n 0.12.1 through like checkn1x or odysseyn1x , which allow you to run the jailbreak from a USB drive without installing a new operating system. Key Features of Checkra1n 0.12.1 Beta
Since there is no official Windows download, the community uses lightweight, bootable Linux environments that contain only Checkra1n. These act as a portable toolkit you can carry on a thumb drive. What it does