: Patched a persistent bug that caused black screens or endless respring loops during the initial injection phase.
Enable via the Control Center and turn off your lock screen passcode temporarily to prevent unexpected execution interruptions.
: All devices running iOS 12.0 through 12.5.7.
The most notable technical change in version 1.6.5 is the update to the internal handling of the MOG (Managed Object Generation) field within the Linux Binary Interface. chimera 1.6.5
The Chimera jailbreak comes in the form of an .ipa file, which is an iOS application archive. You can obtain the correct version from the official Chimera website at chimera.coolstar.org . For version 1.6.5, a full version (approximately 90MB) is available for iOS 12.0 to 12.5.7.
If you are looking for for an iOS device, it represents a highly stable jailbreak solution for iPhones and iPads stuck on the iOS 12.5.x firmware (such as the iPhone 5s or iPhone 6). It provides a clean, modern jailbreaking experience centered around the Sileo package manager and remains a reliable method for unlocking these older devices today.
: If you use a free Apple ID, you must re-sign and re-install the app using your computer every 7 days. : Patched a persistent bug that caused black
If you install modifications from Sileo but they don't show up, ensure you have a working installation of and RocketBootstrap from a trusted legacy repo. The Legacy of Chimera 1.6.5
: Older devices operate with constrained RAM (1GB to 2GB). Chimera 1.6.5 features tight memory leak mitigations to prevent standard apps from crashing due to substrate overhead. Step-by-Step Installation Guide
Once your device boots back up, look for the icon on your home screen. If it's missing, open the Chimera app and repeat this step. Troubleshooting Common Issues The Sideloaded App Crashes on Launch The most notable technical change in version 1
For users of these devices, updating to 12.5.7 meant losing their jailbreak, which was a deal-breaker for many. The community needed a savior. Enter CoolStar, the lead developer of the Odyssey Team, who had recently announced a departure from the jailbreak scene. Despite this, Chimera 1.6.5 was released in late March/early April 2023 to fill this exact gap, adding native support for the latest iOS 12 version and giving users a reason to keep their devices secure and tweaked.
: Once installed, go to Settings > General > Device Management (or Profiles) on your iPhone/iPad. Tap on your Apple ID and select "Trust" . Run the Jailbreak : Open the Chimera app on your home screen. Tap the "Jailbreak" button.
By updating to support iOS 12.5.7, the Odyssey Team ensured that millions of older devices could continue to be modified and customized. For the owners of iPhone 6 or iPad Mini 2 devices, which cannot run modern versions of iOS, Chimera 1.6.5 keeps their hardware relevant and functional far beyond Apple's intended support window. It allows users to remove system bloat, unlock iOS features (like widgets on the lock screen), and install system-wide ad-blocking tools that modern iOS versions still struggle to match.
If you need help identifying which version of Chimera to use, or if you're trying to jailbreak a specific iPhone 5s, 6, 7, 8, or X, , and I can point you in the right direction. Share public link
Chimera is designed for 64-bit devices running iOS 12. The version 1.6.5 supports all devices from the A7 to A9 chipsets, covering a wide range of popular models.