9.0 Restoring E4 Microcontroller Code
IMPORTANT!
DO NOT use this procedure to upgrade the firmware in your FreeSpace® E4 Series II system to any version other than the version running at the time that the design file was created.
The microcontroller code residing in the E4 system hardware can be restored using the Installer™ software.
1.Using the E4 front panel STANDBY button, place the unit in standby mode (the STANDBY indicator should be amber).
2.Press the STANDBY button again to place the unit in operat- ing mode (the SYSTEM STATUS indicator should be green).
3.If not already done, connect your PC to the E4 unit using a serial data cable.
4.Launch the version of Installer software that was last used to configure the system. As the software activates the connec- tion with the E4 unit, a status dialog window appears. Once the connection is made, the E4 front panel (block diagram) appears on your screen.
5.Click the 
(Save File) button and save the design file to your PC. This ensures that all of your settings and events will be available later.
6.Press and hold the Ctrl and Alt keys on your PC keyboard
and click the 
(Flash Configuration) button. The Upload Microcontroller Code dialog appears:
7.Locate the appropriate microcontroller code file in the installation directory on your computer. Typically, this file is located in,
C:\Program Files\FreeSpace Installer 2.0\Firmware
If the OUTPUT VOLTAGE of your E4 system is set to 70V, select,
If the OUTPUT VOLTAGE of your E4 system is set to 100V, select,
(#.#.#.# represents the code version number.)
8.When you are asked to confirm that you are about to upload new firmware, click Yes.
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