Before beginning the following process, de-activate your host PC’s firewall, if any, in accordance with your company cyber-security and/or system usage policies.

1. Perform this update using either one of the following CPU ports:

   • USB port, or

   • Ethernet service port (Port 1).

   NOTE: This update cannot be performed using the CPU’s dual network ports.

2. Open Unity Loader.

3. In the Firmware tab, in the PC list, select the migration LDX file that corresponds to your CPU reference.

   For example, migration_BMEH584040.ldx.

4. Click the green arrow ( ) to upgrade your CPU with the selected migration file.

5. Wait while your CPU reboots. This may take a few minutes. During reboot, your CPU will not be reachable.

   Interrupting the update procedure before it has completed will cause the connection to be lost, and can cause irreparable damage to the CPU.

   NOTICE
   	EQUIPMENT DAMAGE During the transfer of the firmware file: Do not power OFF the CPU. Do not power OFF the PC. Do not shut down Unity Loader. Do not disconnect the communication cable. Do not remove or insert the optional SD memory card. Failure to follow these instructions can result in equipment damage.

6. Check your CPU LED panel. When the RUN (green), ERR (red) and IO (red) LEDs are blinking, proceed to Step 2.