User Manual

Firmware Update Procedure for SR-300
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Location of the serial number:
You can find the serial number at the rear left side of your SR-300 subwoofer integrated
receiver.
Affected Serial Numbers
The serial number consists of a letter followed by 6 numbers and 2 letters.
[Example: “Y121530ZP”].
Check the 5 numbers from the left. If they are the same or higher than the one below,
you DO NOT need to perform this update.
Y024930TV
Same or higher Unnecessary to perform update
Lower Need to be updated.
See following pages for instructions.