If you see an "Untrusted Enterprise Developer" error, go to Settings > General > Profiles & Device Management . Find the certificate and tap Trust .

Navigate to > General > Profiles & Device Management (sometimes listed as VPN & Device Management ).

Go to Settings > General > Device Management (or Profiles), find the Chimera certificate, and tap "Trust" . Open the Chimera app and tap "Jailbreak."

Here's a step-by-step guide to jailbreaking iOS 12.5.7 using unc0ver without a PC:

To jailbreak , you must use a "No-Computer" signing service to install a jailbreak app like Freya or Chimera directly through Safari.

For the true nostalgists: There is an old for iOS 12.5.7? No. That was patched.

| Device Family | iOS Versions Supported | |-------------------------|--------------------------------------| | iPhone 5S, 6, 6 Plus | iOS 12.0 through 12.5.7 | | iPhone 6S, 6S Plus, SE | iOS 12.0 through 12.5.7 | | iPhone 7, 7 Plus | iOS 12.0 through 12.5.7 | | iPad Mini 2, 3, 4 | iOS 12.0 through 12.5.7 | | iPad Air 1, 2 | iOS 12.0 through 12.5.7 | | iPod Touch 6G | iOS 12.0 through 12.5.7 |

: Find the Enterprise App profile, tap it, and select Trust .

Your device will freeze briefly and execute the kernel exploit code before automatically rebooting. Step 5: Finalize and Open Cydia/Sileo Once your device reboots, unlock your screen.

As mentioned earlier, you can try to download Chimera directly via a web-based signing service. These services install the Chimera IPA file over the air (OTA) through Safari. This method does not require a computer, but it is unreliable due to frequent certificate revocations and potential scam sites. Always research the signing service thoroughly before using it.

The "No PC" requirement is the most common question on Reddit’s r/jailbreak. The truth is that the is hardware-based, but it requires USB connection to trigger. For 12.5.7, the voucher_swap exploit (used by Chimera/Odyssey) is software-based and works entirely on the device once the app is installed.

by Apple, making the apps impossible to download. Most experts recommend using

For legacy devices like the iPhone 6, which run on iOS 12.5.7, both the (compatible with A7-A11 devices up to iOS 12.5.7) and unc0ver (compatible with certain versions up to iOS 14.3) tools are available.

Open Safari and visit a reputable signing service like IPA-Apps. Search for Freya or Chimera and tap "Get" or "Install".

Once you are in a jailbroken state, you'll need to manage your device's new capabilities.