Keep the flashed USB drive plugged in and restart your computer.
Just-A-Tech’s Checkra1n 0.12.4 Windows exclusive, based on a custom Linux ISO, enables jailbreaking iOS 12.0–14.8.1 on A7–A11 devices without a Mac, specifically patching A9X boot issues. The package is installed by flashing the ISO to a USB drive using tools like Rufus and booting into a Linux environment to execute the jailbreak, requiring specific settings for A11 device support. For more details, visit Just-A-Tech's YouTube channel justatech checkra1n 0124 windowszip exclusive
Jailbreaking modifies system files. Always back up your data via iTunes or iCloud before proceeding. Proceed at your own risk. Keep the flashed USB drive plugged in and
to flash the ISO onto a USB drive. Ensure you select the correct partition scheme (GPT for UEFI or MBR for Legacy) based on your PC's hardware. Boot from USB to flash the ISO onto a USB drive
The checkm8 exploit requires deep engine level control over USB controllers, requiring an action called . OS Feature macOS / Linux Standard Windows JustATech Windows Solution USB Driver Control Native POSIX architecture allows full DFU USB control.
As soon as the device enters DFU mode successfully, the tool will inject the checkm8 exploit code, flash text logs across your mobile screen, and boot the device.
Right-click the extracted flash execution program and select .