: Open Cydia and add the Luke ZGD Repository.

If you want a truly untethered legacy experience on your iPhone 4s or iPad 2, do not stay on iOS 9.3.6. Instead, use the tweak from the Phoenix jailbreak to dual-boot iOS 6.1.3 —the last truly great, untethered, 32-bit operating system.

In 2019, Apple issued an unprecedented update for devices too old for iOS 10: (and 9.3.5 for iPod touch). This was not a feature update; it was a critical GPS bug fix. Specifically, 9.3.6 addressed the "GPS Week Number Rollover" issue that broke location services on aging 32-bit devices.

The most reliable way to achieve an untethered state is to first apply a semi-untethered jailbreak and then install an "untether" package that allows the jailbreak to persist after reboots.