• Connect to the Liebert AC4 either from a remote computer or through the RS232 port (see
Connecting to the Service Terminal Interface on page70).
• At the Main Menu, enter 0 (zero—Setup System-Login Required).
• At the Login Menu, enter your password.
• At the Setup Menu, enter 5 (Setup System Information).
• At the Setup System Info menu, enter 6 (Perform Firmware Update).
• At the Perform Firmware Update menu, shown below, enter 1 to proceed with an update.
Firmware Update (service terminal interface only)
PERFORM FIRMWARE UPDATE
This command will update
the existing firmware
1=PERFORM FIRMWARE UPDATE
2=RETURN TO SETUP SYSTEM INFO MENU
3=RETURN TO SETUP MENU
4=RETURN TO MAIN MENU
SELECT A NUMBER:1
To perform the update:
1. At the Perform Firmware Update prompt, enter Y (Yes - begin) or N (No - cancel). The current
setting appears in brackets—[N] in the following example.
>PERFORM FIRMWARE UPDATE-YES(Y) OR NO(N)?
>[N]
>[
NOTE: The following instructions refer to the Microsoft Windows HyperTerminal program. These
steps may vary for other communications programs.
2. The firmware update is a two-step process—this step describes how to upload the file
prog###.s19 (where ### is a number—for example, prog118.s19) to the Liebert AC4:
a. At the top of the HyperTerminal window, shown below, click on Transfer, then on Send
File.
Vertiv | Liebert® AC4 User Manual | 58
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