Using the Frame Control Panel > Using the Frame — Controller Settings > Upgrading Module Firmware

Upgrading Module Firmware

You can use the SEL-MCP3 control interface to upgrade the firmware on any module in the frame, including the controller module. Upgrading module firmware is a two-stage process. On most modules (except the FS and XD) you can copy the firmware to the device and then switch the device to that new firmware when you are ready. Switching the device to use the new firmware involves taking the module offline.

SEL-MCP3 modules other than the FS and XD can be upgraded without affecting service. This makes it possible for two versions of firmware to be loaded onto a non-FS/XD module, by transferring the firmware out to module(s) at any time, and then cutting over during a scheduled outage or maintenance window. When a new version of firmware is transferred to the module, the previous inactive version is overwritten.

To upgrade the software on an FS or XD, you must take the module completely offline to prevent disrupting services.

During normal operation, the SEL-MCP3 controller holds a version of code for each module type. Upon the insertion of a new module into the frame, the controller loads its version of firmware onto the new module. This is true even if the module has a newer version of code. However, each slot in the frame can independently be put into Test mode. When a new module is inserted into a slot that is in Test mode, the controller does not load its version of firmware onto the new module. Instead, the module runs with its current firmware. This is helpful when testing a new version of firmware.

Note: Firmware upgrading does not affect any parameter settings on the module.