It is critical to note that devices with A12 chips or newer (iPhone XS/XR and later) are supported. Additionally, while the checkm8 exploit is permanent, the checkra1n jailbreak itself may have limited iOS version compatibility. The most stable support is generally for iOS 12 and up to iOS 14, with varying levels of support for later versions.
Restart your computer and use the boot menu (often F11 or Delete) to boot from the USB drive.
: A modified, lightweight bootable environment (often built on top of tailored Hackintosh bootloaders like Clover or OpenCore) that tricks a computer into booting a micro-environment capable of running Checkra1n. ra1nusbintelnewrw4gdmg top
: Obtain the ra1nusbintelnewrw4gdmg file from a trusted community source.
Fix : Press Spacebar at the bootloader menu and select safe mode flags like -x , -v , or cpus=1 . It is critical to note that devices with
: Use a tool like balenaEtcher to "burn" the .dmg file onto a USB flash drive (at least 8GB recommended).
: These .dmg files were often community-made and prone to Error -20 or USB mounting failures on newer hardware. Restart your computer and use the boot menu
: Downloading .dmg files from unofficial sources (like Mega or Mediafire links often found in YouTube descriptions) carries a high risk of malware.
Instead of using modified macOS images, you can create a live USB of a standard Linux distribution (like Ubuntu) and run official jailbreak tools natively.