How to start the Aurora(n) using the backup factory firmware

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

Tools required: Phillips head screwdriver.

In the unlikely event that programming new firmware onto your Aurora(n) 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 Aurora⁽ⁿ⁾.

2. Remove six screws from top cover.

3. Remove top cover.

4.  Locate SW1 nearest the headphones board at the front left of the PROC board. The factory default posting has PROM 2: ON and PROM 1: OFF as shown below:

5. Change SW1 position 4 to OFF and SW1 position 3 to ON. This will enable the Aurora⁽ⁿ⁾ 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 Aurora⁽ⁿ⁾.

8. Power up the Aurora⁽ⁿ⁾ and program PROM 2 firmware using the “Firmware Update” option on the Function Menu following the instructions in Section 8 of the Aurora⁽ⁿ⁾ User Manual.

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

10. Install top cover by attaching with 6 screws removed in step 2, above.

11. Connect to AC power.

12. Verify the Aurora⁽ⁿ⁾ starts on PROM 2.