Here is why you should avoid it:

: iPhone OS 1.0, 1.0.1, 1.0.2, 1.1.1, 1.1.2, 1.1.3, 1.1.4, and early 2.0 betas. How ZiPhone Works

To get a safe, unmodified copy, use verified archival networks:

In late 2007 and early 2008, Apple’s original iPhone was locked strictly to exclusive carrier networks globally and completely devoid of third-party applications. ZiPhone emerged as a revolutionary all-in-one command-line and graphical user interface (GUI) tool.

: Bypass the emergency call screen without an official, active AT&T SIM card.

Before ZiPhone’s release, unlocking an iPhone required hours of terminal commands, complicated scripts, and a high risk of "bricking" (rendering the phone permanently unusable) your expensive device.

: This major update resolved issues like "greyed-out Wi-Fi" and eliminated the need for manual NVRAM fixes. It also included an embedded apps installer and support for customized plugins.

A functionality to revert the phone to its original state if necessary. How to Use ZiPhone (Historical Context)