How to Use Blank Board Serializer 3T106 to Set the System Serial Number on a Mac Logic Board
If you have a Mac logic board that has a blank or missing system serial number (SSN), you may need to use a tool called Blank Board Serializer (BBS) to set it. BBS is an Apple tool that is typically used by Apple and its Service Partners[^1^]. It can be used to set the SSN on a new logic board or one that has lost its SSN due to damage or corruption.
BBS 3T106 is a version of the tool that works with Macs that have EFI firmware. It comes as a bootable disk image that can be burned to a CD or DVD, or copied to a USB flash drive. To use BBS 3T106, you will need the following:
A Mac with a blank or missing SSN and EFI firmware
A working optical drive, USB port, or FireWire port on the Mac
A blank CD or DVD, or a USB flash drive with at least 10 MB of free space
A Mac with a working optical drive or USB port to create the bootable media
The BBS 3T106 disk image file
The SSN for the Mac logic board, which can be obtained from Apple or its Service Partners
Here are the steps to use BBS 3T106:
Download the BBS 3T106 disk image file from Macintosh Repository [^1^] or another source.
Use Disk Utility or another program to burn the disk image file to a blank CD or DVD, or copy it to a USB flash drive.
Insert the CD or DVD into the optical drive of the Mac with the blank or missing SSN, or connect the USB flash drive to a USB port on the Mac.
Restart the Mac and hold down the Option key until you see a list of bootable devices.
Select the BBS 3T106 device from the list and press Enter.
Follow the on-screen instructions to enter the SSN for the logic board. Make sure you enter it correctly and without spaces.
When prompted, confirm that you want to set the SSN and wait for the process to complete.
Eject the CD or DVD, or disconnect the USB flash drive.
Restart the Mac and check if the SSN has been set correctly. You can do this by going to Apple menu > About This Mac > System Report > Hardware and looking for the Serial Number (system) field.
Congratulations! You have successfully used BBS 3T106 to set the SSN on your Mac logic board. If you encounter any problems or errors, please contact Apple or its Service Partners for assistance.Why do you need to set the SSN on your Mac logic board The SSN is a unique identifier that is used by Apple and its Service Partners to provide warranty and repair services, as well as to activate certain features and software on your Mac. If your logic board has a blank or missing SSN, you may experience some of the following issues:
Your Mac may not be able to connect to the Internet or use iCloud services.
Your Mac may not be able to install or update macOS or other software.
Your Mac may not be recognized by Apple or its Service Partners for warranty or repair purposes.
Your Mac may display an error message that says \"This Mac has no hardware UUID\".
Therefore, it is important to set the SSN on your logic board as soon as possible to avoid these problems and enjoy the full functionality of your Mac.
How does BBS 3T106 work BBS 3T106 is a tool that writes the SSN to a special area of the logic board called the EFI firmware. The EFI firmware is a small program that controls the basic functions of your Mac, such as booting up, loading the operating system, and communicating with the hardware. The EFI firmware also stores some information about your Mac, such as the SSN, the model identifier, and the firmware version. BBS 3T106 accesses the EFI firmware and modifies it to include the SSN that you enter. This way, the SSN becomes part of your logic board and can be read by your Mac and other devices. 061ffe29dd