Emerson AC4 用户手册

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.

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.

b. In the Send File window, as shown above:

• In the Filename box, enter the full path of the file to be uploaded—prog###.s19—or click 

on the Browse button to locate the file.

• In the Protocol box, select Xmodem from the drop-down list.
• Click on the Send button. (To close the window without sending the file, click on Close or 

Cancel.)

• When the transfer is complete, a confirmation message appears in the Service Terminal 

Interface window.

3. Next, follow these steps to upload the file flash###.s19 (where ### is a number—for example, 

flash512.s19) to the Liebert AC4:
a. At the top of the HyperTerminal window, shown above, click on Transfer, then on Send File.
b. In the Send File window, shown above:

• In the Filename box, enter the full path of the file to be uploaded—flash###.s19—or click 

on the Browse button to locate the file.

• In the Protocol box, select Xmodem from the drop-down list.
• Click on the Send button. (To close the window without sending the file, click on Close or 

Cancel.)

• When the transfer is complete, a confirmation message—“Firmware Update Successful”—

appears in the Service Terminal Interface window and the Liebert AC4 reboots with the 

new firmware update.

>PERFORM FIRMWARE UPDATE-YES(Y) OR NO(N)?
>[N]
>[

NOTE
The following instructions refer to the Microsoft Windows HyperTerminal program. These 

prog###.s19 or