HFZ Activator SN Writer

Changing an iPhone's serial number without access to Apple's tightly guarded PurpleRestore software seemed like an insurmountable challenge. However, a fortunate Twitter leak has sparked a revolution. Resourceful developers harnessed this information to create their own tools, enabling the modification of the serial number directly on iPhones' NAND memory, such as the HFZ Activator SN Writer.

Download HFZ Activator SN Writer

What is HFZ Activator SN Writer?

HFZ Activator SN Writer is a user-friendly and powerful tool exclusively designed for macOS, enabling you to put your iPhone into “purple mode”. With this tool at your disposal, you can effortlessly modify essential device identifiers such as the serial number, Wi-Fi MAC address, and Bluetooth MAC address without the need to use expensive software or PurpleRestore.

Changing your iPhone's SN has never been so easy, thanks to the user-friendly HFZ Activator SN Writer. To begin, ensure your device is in DFU mode. Although this process may seem daunting, worry not! We provide you with an easy-to-follow tutorial on entering DFU mode for all checkm8 devices. With our step-by-step guide, you'll master this process effortlessly.

Once your device is in DFU (Device Firmware Upgrade) mode, open HFZ Activator SN Writer on your macOS system. This tool's intuitive interface can also guide you through the process, making it accessible to users of all levels of expertise. Next, boot your device in purple mode to gain access to edit and write permanently a new serial number for your device.

Now, with the powerful SN Edit tool, you can easily customize your iDevice by changing the serial number (SN), Wi-Fi MAC address (WMac), and Bluetooth MAC address (BMac). However, please note that to access this advanced feature, you'll require a special DCSD cable.

The DCSD cable is specifically designed to write data to the SysCfg (System Configuration) partition of the NAND Memory, making it compatible with iPhone 7, 7 Plus, 8, 8 Plus, and X models. This unique capability is not only valuable for modifying device identifiers but also serves as an essential tool for most of iCloud Bypass activation software.

NAND memory, also known as NAND flash memory, is a type of non-volatile storage technology used in various electronic devices, including iPhones, iPads, USB drives, solid-state drives (SSDs), memory cards, and more. It is a crucial component in modern computing and portable devices due to its ability to retain data even when the power supply is disconnected.

For Windows PC users seeking an easy yet powerful solution to enter diagnostic mode and modify essential settings like the serial number on their iDevices, look no further than MagicCFG Windows. This SysCFG Writing Utility is your gateway to a whole new level of customization.

Supported devices

How to install HFZ Activator SN Writer

Download HFZ Activator SN Writer now and change your iPhone serial number to activate the iCloud locked device. With our easy-to-follow instructions and seamless modification process, writing iPhone SN has never been easier. HFZ Activator SN Writer was released for macOS only.

1. Download HFZ Activator SN Writer from the link at the top of this page.
2. Open the HFZ-Activator-SN-editor v1.0.1.pkg.
3. Follow the installation instructions on the screen.
4. Once completed, access HFZActivatorSNEdit app from Applications.

What's new

• Updated HFZ Activator SN Writer to version 1.0.1.
• Added Already in purple mode option.
• Overall improvements and bug fixes.

Written by

Kuba Pawlak

Kuba has over 20 years of experience in journalism, focusing on jailbreak since 2012. He has interviewed professionals from various companies. Besides journalism, Kuba specializes in video editing and drone flying. He studied IT at university before his writing career.

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