Rootless means that the jailbreak does not grant access to the root or “/” directory of the iOS device, which contains the system files and settings. Instead, the jailbreak only allows writing in the /var directory, which contains the user data and preferences. This makes the jailbreak safer and less detectable by apps that have jailbreak protection, but also limits the compatibility and functionality of some tweaks and packages that require root access.

WinRa1n is a semi-tethered jailbreak, which means that the device needs to be connected to the PC and run WinRa1n every time it is rebooted or turned off. Otherwise, the jailbreak will not work and the device will not load any jailbreak extensions or apps. However, unlike a tethered jailbreak, the device can still boot normally without the PC connection, but it will not be jailbroken until WinRa1n is run again.

WinRa1n works by exploiting the checkM8 vulnerability in the bootrom of the iOS device, which gives it access to the device’s firmware and allows it to install a custom bootloader. WinRa1n then uses checkra1n or Palera1n to inject tweaks and install a package manager, such as Cydia, Sileo, or Zebra, on the device.

WinRa1n also has some risks and limitations that users should be aware of, such as:

• It is a semi-tethered jailbreak, which means that the device needs to be connected to the PC and run WinRa1n every time it is rebooted or turned off.
• It may cause some issues with the device’s security and performance, such as battery drain, overheating, crashes, or malware infections.
• It may void the device’s warranty and make it ineligible for Apple’s support and services.
• It may not work with some apps or features that have jailbreak detection or require a secure enclave, such as Face ID, Touch ID, Apple Pay, or banking apps.