If your PC only has USB-C ports, try using a high-quality hub or a different machine. The checkra1n exploit is notoriously finicky with USB-C connections. A11 Devices (iPhone 8/X):
Get-FileHash checkn1x-1.0.6-amd64.iso -Algorithm SHA256 checkn1x-1.0.6-amd64.iso download
Usually comes pre-loaded with checkra1n 0.12.4, which supports iOS 12.0 through 14.8.1 on A7-A11 devices. No Installation Required: If your PC only has USB-C ports, try
Checkn1x is not meant to be used in a virtual machine (USB passthrough is unreliable for DFU timing). You write the ISO to a USB drive and boot from it. No Installation Required: Checkn1x is not meant to
Checkn1x is a minimal, Linux-based distribution designed for one purpose: running the jailbreak on PCs. While checkra1n was originally a macOS-only tool, checkn1x allows users to boot a tiny Linux environment from a USB drive to execute the exploit.
Checkra1n is a popular jailbreaking tool used to jailbreak Apple devices, including iPhones, iPads, and iPod touches. It exploits a vulnerability in the bootrom of Apple devices to gain access to the device's file system and allow users to install unauthorized apps and tweaks.