The newly released Pangu iOS 9 jailbreak has brought its own share of installation issues, inherent bugs and post-update Cydia problems, including the inability to open Cydia as the app crashes unexpectedly when launched. This means you can no longer install any jailbreak tweaks or third-party apps via Cydia as the app itself seems to be broken at the moment.
Nevertheless, folks at Redmond Pie have shared a simple fix to resolve this issue with ease:
Step 1: Create a full unencrypted backup of your device using iTunes.
Step 2: Download and install the appropriate iOS 9.0.2 firmware for your device, using our step-by-step guide posted here.
Step 3: Boot your device in DFU mode:
- Connect your device to computer via original USB cable and launch iTunes.
- Press and Hold both Power and Home (Touch ID) buttons on your device.
- Wait for 10 seconds before releasing the Power button. However, continue holding the Home/Touch ID button until iTunes confirms your device is in DFU mode.
Step 4: When in DFU mode, press and hold the left SHIFT key in Windows, or the Option key if using Mac, and then click on the 'Restore iPhone...'button in iTunes.
Step 5: Download the latest Pangu 1.0.1 jailbreak tool. Then launch Pangu 1.0.1.exe, and follow the onscreen instructions to jailbreak your device. If you need assistance, just follow our step-by-step guide posted here.
Step 6: Once the jailbreak completes, just turn off Airplane mode and ensure you are connected to the internet or WiFi just fine, before launching the Cydia app.
Step 7: Launch Cydia now and let it refresh or reload everything completely. Wait until Cydia loads up and let the phone restart once. Once your device restarts, you should be able to launch Cydia without any hassles.
Step 8: Now connect your device to iTunes once again and restore data from earlier backup.
[Source: Redmond Pie]