How to start the Hilo using the backup factory firmware

The Hilo has two complete copies of firmware so there is no risk of “bricking” your Hilo when flashing new firmware. 

Tools required: Phillips head screwdriver.

In the unlikely event that programming new firmware onto your Hilo keeps it from starting up properly, it is a fairly straight-forward process to switch the unit to start using the backup factory firmware (which cannot be overwritten by the end user).

1. Disconnect power from Hilo.

2. Remove seven screws from top cover.

3. Remove top cover.

4. Locate SW1 on the main Hilo board.  The factory default position has CONFIG PROM 2: ON and CONFIG PROM 1: OFF.

5. Change SW1 position 4 to OFF and SW1 position 3 to ON. This will enable the Hilo to start on PROM 1 instead of PROM 2.

6. Temporarily replace the top cover so there is no chance of coming in contact with any powered electronics.

7. Reconnect the AC power to the Hilo.

8. Power up the Hilo and program the Hilo PROM 2 firmware using the “LynxFirmware” update application.

9. Once the firmware on PROM 2 is successfully programed: disconnect power from Hilo, remove the top cover; change SW1 back to CONFIG PROM 2: ON and CONFIG PROM 1: OFF to have the Hilo start on PROM 2.

10. Install top cover by attaching with seven screws removed in step 2, above.

11. Connect to AC power.

12. Verify the Hilo starts on PROM 2.