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CHAPTER 8: FIRMWARE UPGRADE 121
Stacking Units
Updating Stacking Units for Failsafe Upgrade Feature
If the boot loader version of your Stacking Unit is older than 0C5, it does not have the failsafe
capability, and you must upgrade it if the failsafe feature is desired. The upgrade of the Stacking
Unit for failsafe capability requires these requisites:
• Keep only one Stacking Unit connected to the Main Unit at one time.
• The Main Unit must be implemented with Paragon II 4.2 firmware or later as detailed below.
FIRMWARE PART VERSION
Boot loader 0C4 or later
Firmware code 3E5 or later
The major upgrade procedures may vary depending on the situation of your devices. For example,
if the boot loader version of your Main Unit is already 0C4 and the firmware version is 3E5, you
can skip STEP 1 below.
STEP 1: Update the Main Unit’s boot loader to 0C4 and firmware to 3E5 or later
STEP 2: Keep only one Stacking Unit connected
STEP 3: Update the Stacking Unit’s Firmware
STEP 1: Update the Main Unit’s Boot Loader to 0C4 and Firmware to 3E5 or Later
There are two types of scenarios:
• The boot loader version of the Main Unit is earlier than 0C4 --- you must upgrade its boot
loader to 0C4 or later. Refer to Updating Main Units for Failsafe Upgrade Feature earlier
in this chapter for details.
• The boot loa
der version of the Main Unit is 0C4 or later, but its firmware code is earlier than
3E5 --- download the firmware of version 4.2 or later, and upgrade it by following the steps
described in General Update Procedure in this c
hapter. The firmware file to choose is
P2-XXX.hex (XXX represents the version).
STEP 2: Keep Only One Stacking Unit Connected
To upgrade the Stacking Unit for obtaining the failsafe capability, only one unit is allowed to
connect to the Main Unit at one time. If there are more than one Stacking Unit or no Stacking
Unit connected to the Main Unit, you must do the following:
1. Power off the Main and Stacking Units.
2. Connect only one Stacking Unit to the Main Unit.
3. Power on the Stacking Unit first.
4. Power on the Main Unit.
5. Set the Main Unit’s stacking support to 1. See the “Stacking Support” section under Paragon
II Front Panel Display an
d Controls in Chapter 2 for additional information.
6. Set the Stacking Unit ID to 1. See step 6 of Installing the Paragon P2-UMT1664S Stacking
Unit in Chapter 2 for additional inform
ation.
7. Power off both units.
8. Power on the Stacking Unit.
9. Power on the Main Unit.
STEP 3: Update the Stacking Unit’s Firmware
Both of the firmware code and boot loader will be updated after the following is done.
1. Make sure the Main Unit is connected, via network, to the PC that will run Paragon Update.