Open‑source activation bypass
for legacy iOS devices.
This tool is strictly intended for research and educational use only. Please do not use it for illegal purposes or in production environments.
Connect your device in normal mode via USB and ensure it is connected to Wi‑Fi. Download and launch the PC client, and once your device is detected, press Activate Device.
Do not disconnect the device until activation is complete.
Supported methods and iOS versions.
sftpCommon questions and troubleshooting.
For downgraded devices running iOS 4.0-8.4.1, the device must be jailbroken. You can enable the Jailbreak option during the downgrade process in Legacy iOS Kit.
Ensure drivers are installed and the device is detected by other tools such as iTunes or Finder.
Use carbon.sep.lol combined with kDFU to downgrade using Legacy iOS Kit.
Use carbon.sep.lol to jailbreak your device. Note that the exploit may be unstable and take several attempts to work properly. In case it fails, keep trying, rebooting device and reopening Safari.
For instructions on making the jailbreak untethered on iOS 9.3.5-9.3.6, refer to ios.cfw.guide iocaste untether installation guide.