iOS 12.5.5 is a special firmware. Apple released it long after iOS 13, 14, and 15 launched, specifically to patch security flaws in older devices like the iPhone 5s, iPhone 6, iPhone 6 Plus, and iPod Touch (6th Gen). Because these devices use the A7, A8, and A8X chips, they are vulnerable to the checkm8 bootrom exploit. This makes Checkra1n the only permanent jailbreak for these devices on iOS 12.5.5.
Yes. The iPhone 6 Plus works, but sometimes requires the "Safe mode" option mentioned above due to the A8 chip quirks.
If you search for "checkra1n for Windows download," you will find hundreds of websites offering .exe or .msi installers. download checkra1n for windows ios 12.5.5
If the Linux USB method sounds too technical, consider these options:
While WSL allows command-line Linux, it lacks direct USB access for DFU mode devices. Most users fail here. Avoid this for jailbreaking. iOS 12
Recommended, safer methods
Practical checklist before attempting
Common pitfalls
Verdict: If you need to run checkra1n from Windows, use a Linux live USB or a Linux VM for safety and reliability. Avoid unofficial Windows ports. Always backup and confirm device compatibility first. If the Linux USB method sounds too technical,
(If you want, I can provide step-by-step commands for creating a Linux live USB and running checkra1n on it.)
Even with the right method, you might hit snags. Here are fixes for the most common issues when using Checkra1n on Windows to target iOS 12.5.5.