1) Put a floppy in the HDR to keep it from booting (so it will provide power for the Small Remote without resetting it).

2) On the small remote, hold down Rec Arm 1+2 while powering up.

3) All leds should light, the firmware version will be displayed on the 7-segment displays (currently 1.03).  
In TEST MODE:
-Pressing buttons will extinguish the associated LED
-the inc / dec buttons control the 7-seg displays and VU meter
-The footswithch controls the (minutes) LED