1.2 - Self-Upgrade Application (LJSelfUpgrade) [U6 Datasheet]

The processor in the U6 has field upgradeable flash memory. The self-upgrade application shown in Figure 1-5 programs the latest firmware onto the processor.

USB is the only interface on the U6, and first found is the only option for self-upgrading the U6, so no changes are needed in the “Connect by” box. There must only be one U6 connected to the PC when running LJSelfUpgrade.

Click on “Get Version Numbers” to find out the current firmware versions on the device. Then use the provided Firmware Upgrade File internet link to go to labjack.com, go to the U6 Firmware subsection, and check for more recent firmware. Download firmware files to the any location on your computer.

Click the Browse button and select the firmware file to program. Click the Program button to begin the self-upgrade process.

**Figure 1.2-1.** Self-Upgrade Application

SPC Troubleshooting

If problems are encountered during programming, try the following:

Unplug the U6, wait 5 seconds then reconnect the U6. Click OK then press program again.
If step 1 does not fix the problem, unplug the U6 and watch the LED while plugging the U6 back in. Follow the following steps based on the LED's activity:
If the LED is blinking continuously, connect a jumper between FIO0 and SPC, then unplug the U6, wait 5 seconds and plug the U6 back in. Try programming again (disconnect the jumper before programming).
If the LED blinks several times and stays on, connect a jumper between FIO1 and SPC, then unplug the U6, wait 5 seconds and plug the U6 back in. The LED should blink continuously indicating flash mode. Try programming again while the device is in flash mode (disconnect the jumper before programming).
If the LED blinks several times and stays off, the U6 is not enumerating. Please restart your computer and try to program again.
If there is no LED activity, connect a jumper between FIO1 and SPC, then unplug the U6, wait 5 seconds and plug the U6 back in. If the LED is blinking continuously click OK and program again (after removing the jumper). If the LED does not blink connect a jumper between FIO0 and SPC, then unplug the U6, wait 5 seconds and plug the U6 back in.
If there is no activity from the U6's LED after following the above steps, please contact support.