Unsigned Ipsws ((link)) ⭐ Must Watch

If your current device is already jailbroken, you might be able to use specific kernel exploits to downgrade or upgrade to an unsigned version. This does not rely on Apple's signing servers but rather on bypassing the checks entirely. This requires a high level of technical knowledge and carries a risk of "bricking" your device.

The concept of the Unsigned IPSW serves as a stark reminder of who truly owns the software on your device. While you paid for the hardware, Apple retains the keys to the operating system.