Toshiba 37AV502U Service Manual page 14

Firmware Update
Firmware updating for this chassis family is accomplished via a USB
port located on the rear of the unit. It is designated as "Service" and
is located between the HDMI and PC audio input jacks. Visit the
Toshiba website at www7.toshiba.com for the latest update
information.
Factory Mode
The factory mode, necessary adjustments, and update procedures
shown below can be accessed in this unit using the supplied remote
control transmitter.
To access the factory mode, you must press "Left Arrow (<), Exit,
Enter" in sequence on the remote transmitter. The mode can be
exited by pressing exit or simply turning the unit off.
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