About Host Id; Validating The Microsd Card's Host Id - Distech Controls EC-BOS-9 User Manual

Chapter 1 EC-BOS-9 backup and restore overview
communications to the controller. You can use a serial terminal program (for example: PuTTY) with the DEBUG
port to access the controller's system shell menu.

About Host ID

Unlike other controllers, the ATLAS-1B22-B800-1CD8-A54B has a Host ID that can change based on the
presence or absence of a MicroSD card. It is important to understand the role of the MicroSD card and its part
in the creation of the controller Host ID, which is unique and essential for licensing the controller.
• To support portability between EC-BOS-9 devices, the Host ID of a EC-BOS-9 will change to reflect pres-
ence of MicroSD card. This ties the license file to the Host ID on the SD card and makes it portable.
• For a EC-BOS-9 without an MicroSD card, the Host ID is derived from the CPU ID. It takes the format: AT-
LAS-1B22-B800-1CD8-A54B.
• For a EC-BOS-9 with a MicroSD card, the Host ID is derived from data on the MicroSD card. It takes the for-
mat: ATLAS-SD-F93E-14C2-6345-D321

Validating the MicroSD card's Host ID

The EC-BOS-9 Host ID depends on the presence of a MicroSD card. This ties the license file to the Host ID on
an MicroSD card and makes it portable. All MicroSD cards are programmed with the Distech Controls secret,
which validates the authenticity of the MicroSD card-based Host ID established using Card Identification (CID)
values. The CID number is a unique identifier or serial number created on the MicroSD card at the time of
manufacturing.
Prerequisites: The controller is plugged into the wall outlet with its power off.
Step 1 Insert a MicroSD card into the card slot.
Step 2 Turn the power on.
If no MicroSD card is present, the device uses a CPU-based Host ID. When the MicroSD is present at
boot time, the MicroSD card is checked for authenticity using the Distech Controls secret. The Host
ID's authenticity will be verified. If the MicroSD card fails authentication, the Host ID is considered in-
valid. If the MicroSD card passes authentication, the MicroSD card-based Host ID will be used.
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EC-BOS-9 Backup and Restore Guide
July 15, 2023