All posts by Elcomsoft R&D

If you ever used the checkra1n jailbreak or the checkm8 acquisition method available in some mobile forensic products like iOS Forensic Toolkit, you know that the trickiest parts of the process are the first two: entering DFU, and using the exploit itself. Even if you have the right cables and enough experience, sometimes you may still bump into a weird issue or two. The device may not enter DFU whatever you do, or the exploit fails. How can you increase your success rate?

Switching the iPhone into DFU mode is frequently required during the investigation, especially for older devices that are susceptible to checkm8 exploit. However, switching to DFU requires a sequence of key presses on the device with precise timings. If the device is damaged and one or more keys are not working correctly, entering DFU may be difficult or impossible. In this guide, we offer an alternative.