Okay, try this:
Turn "ON" your
HVL-F58AM ... you know, tell it it is "pretty" and "has a nice waistline ..."
Oops
Anyway, with the flash "
ON", press the "
Fn" button right in the center of the quad rocker on the back of the flash and hold it down for several seconds, until the LCD panel displays the CONTROL codes. It should come up with "
C 01". This is
NOT the control code you want to change. You want control code "
C 03"
Press the
right rocker button and get to "
C03".
Then, press the
down rocker button to change the control to "
CTRL2".
C-03.jpg (<- click on image to magnify)
This is the setting that controls the HVL-F56AM flash from the HVL-F58AM.
To exit quickly, simply shut OFF the flash and then turn it back to ON.
Let us know if this does the trick.
Good Luck!