How to flash upgrade your TCU

The flash upgrade procedure should not be used unless well understood. The flash upgrade procedure is not intended to change a calibration file or to tune the transmission controller. The flash upgrade procedure is only used for firmware upgrades. Firmware upgrades directly modify the code in control systems of the transmission controller. The ability to flash upgrade the firmware allows the transmission controller to be upgraded in the field so that new features can be added and possible problems can be remedied.

Save any files calibration files already in the unit prior to upgrading! To begin a flash upgrade, select flash upgrade from the explorer menu or flash upgrade then flash upgrade TCU from the toolbar. Once this form opens, no other forms will be available. This is done to protect the TCU. At this form, the firmware major and minor revision will be displayed. The hardware revision will also be displayed. To begin flashing the transmission controller, click the "Open Flash File to Begin" button. This will open a file selection menu. Only *.rom files can be opened and the correct file must be chosen for a proper upgrade. If you are unsure about which rom file you should use, contact technical support first. When using newer software with an older controller (or vice versa), the unit may not communicate or properly find the com port until it is flash upgraded. Once the correct file has been selected, click open in the current menu. A warning message will appear with a warning not to turn the power off until the upgrade is complete. Follow these instructions explicitly. Once the instructions are understood, click yes.

The flash upgrade procedure will now begin and a taskbar will show upgrade progress. Once completed, a message will appear notifying the user that a calibration must be programmed into the unit before continuing. Click ok. Select a new calibration file. If the calibration file requires a change before being programmed into the unit, a message will appear and you will be able to save the new file. This happens because some versions of firmware are only compatible with some calibrations. Once the flash upgrade procedure is complete, the unit should be turned off and turned back on again.