Something You Should Know –A12 A13 DFU PASSCODE Erase Tool

Recently, a PASSCODE Erase Tool designed for the iPhone XR through iPhone 11 Pro Max series has garnered attention within certain circles. The DFU tool claims to offer powerful features such as “one-click DFU,” “one-click entry into Pwned DFU mode,” and “one-click restore.” However, the underlying technical principles and operational risks are not only unfamiliar territory for ordinary users but also pose significant hidden dangers.

This document aims to explain the tool’s workflow and underlying principles in an accessible manner, with a particular focus on analyzing the severe consequences of its final step: “Hidden ID.”

I. Core Principles of the Tool: From DFU to Pwned DFU

1. Technical Principles:

In a normal state—where the device is neither jailbroken nor in PWND mode—the screen passcode is stored in a highly encrypted manner within the system’s Secure Enclave and cannot be directly read or modified. However, once the device enters Pwned DFU mode, the system’s underlying defenses have been breached, granting the tool direct read-write access to the system’s underlying partitions. At this point, the tool can use specific commands to directly locate and delete or reset the system files storing the passcode hash values, thereby forcibly clearing the screen passcode.

2. Results:

After a successful operation, the phone will no longer prompt for a lock screen passcode upon restart and will allow direct access to the system or activation screen.

II. Analysis of the Complete Operation Process

The completed flowchart

Now, we can complete the entire technical chain to gain a clearer understanding of the relationships between each step:

Step 1: Enter Low-Level State

Enter DFU mode with a single click → Place the device in a state that allows low-level communication.

Step 2: Obtain Highest Privileges

Enter Pwned DFU (PWND) mode with a single click → Exploit a hardware vulnerability to breach the system’s defenses and gain the highest level of control over the hardware.

Step 3: Bypass the First Lock

Erase the screen passcode → Use PWND privileges to directly delete the screen lock information stored in the system. (The key point you mentioned)

Step 4: Modify Core Identity

Execute Purple Screen Mode & Tamper with Identity Information → Enter engineering mode to modify the device’s “ID” (serial number, IMEI, etc.) stored in the memory chip.

Step 5: Spoof and Activate

Bypass the activation lock (ID lock) → Use the tampered “fake identity” to deceive Apple’s servers and pass verification.

Final State:

Create a “hidden ID” device → The device appears usable but is actually a “time bomb” with major hidden risks.

III. Why Are These Tools Gaining Attention?

The workflow of this Pwned DFU Mode Adapter is: first, gain root access; second, remove the screen lock; and finally, tamper with identity information to bypass the ID lock. Its appeal to certain individuals lies precisely in its ability to resolve two issues—being “locked out of the system” (screen lock) and “unable to activate” (ID lock)—in a single step.

However, please be warned once again: this “one-stop” jailbreaking service produces a final product—“hidden ID” devices—that does nothing to mitigate the infringement of ownership rights or the extremely high subsequent risks (bricking, functionality failure, remote locking). Any commercial activity promoting this technology is exploiting information asymmetry to shift the risk onto the end user.

IV. How Should Ordinary Users Make Their Choice?

For ordinary users, we reiterate our previous advice: Staying away from “hidden ID” devices and adhering to official channels for purchase and legal unlocking methods is the only correct way to protect your rights and interests.