If you want a jailbreak, you should read the guide.

You can obtain v2.0.0 beta here.

If you need an older v2.0.0 beta, please get it here.

Warnings

This palera1n rewrite has noticeably different arguments compared to the shell version of palera1n.
- Highly recommended that you take a look at how to use palera1n-c here.
This does NOT support tethered creation or booting. You must use the older shell version of palera1n (clone with -b legacy).
We are NOT responsible for any data loss, or the result of a device being bricked. The user of this program accepts responsibility should something happen to their device. While nothing should happen, jailbreaking has risks in itself.
- If your device is stuck in recovery, please run futurerestore --exit-recovery, or use irecovery -n.
palera1n will never work in VirtualBox, VMware or any virtual machine that doesn't support PCI passthrough.

Requirements

A checkm8 vulnerable iOS device on iOS 15.x or 16.x (A8 - A11)
- If using rootful, you will need 5-10GB of space for the fakefs. This means 16GB devices cannot use the full fakefs creation. However, you can change the arguments to -Bf to create a fakefs with bind mounts, so it uses a smaller size, at the expense having unwritable parts in rarely-written paths, and then boot it
- On A11, you must disable your passcode while in the jailbroken state (on iOS 16, you need to reset your device before proceeding with palera1n).
USB-A cables are recommended to use, USB-C may have issues with palera1n and getting into DFU mode.
Technical explanation
The BootROM will only enter DFU if it detects USB voltage, which boils down to checking whether a certain pin is asserted from the Tristar chip. The Tristar does this based on the cable's accessory ID, and apparently USB-A and USB-C cables have different accessory IDs, and the one of the USB-C cables makes the Tristar not assert the USB voltage pin.
A Linux or macOS computer
- AMD CPUs (not AMD Mobile) have an issue [with (likely) their USB controllers] that causes them to have a very low success rate with checkm8. It is not recommended that you use them with palera1n.
  - If your device does not successfully jailbreak, try a computer with an Intel or other CPU
Apple Silicon Macs with USB-C
- USB-C port on Apple Silicon Macs may require manual unplugging and replugging of the lightning cable after checkm8 exploit.
- This problem may be solved by connecting via USBHub.

Need help?

Make sure you provide full details on your device, such as:

iDevice
iOS Version
Passcode enabled?
Logs, if panicked then send latest panic-full log from your iDevice.

Using -V and -v would help with debugging.

Join the Support Discord, and create a thread in #support or ask in #general.

Credits

palera1n-c Contributors and Credits

Nick Chan for the rewrite
Nebula - palera1n owner and manager
Mineek
Tom for updated ploosh kpf and universal loader
Lakhan Lothiyi for palera1n loader app
checkra1n for the base of the kpf
the Procursus Team for the amazing bootstrap
Évelyne for ElleKit, rootless tweak injection
Sam Bingner for Substitute, rootful tweak injection

Thank you so much to our Patreons that make the future development possible! You may sub here, if you'd like to.

tom-snow/palera1n