Extron Electronics IN1502 Setup Guide - Manual (Page 25)

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Refer also to the IN1502 User’s Manual at www.extron.com.
Firmware Upgrade Installation
In some cases the IN1502 firmware may require an update.
The full procedure is included in the IN1502 User's Manual. It
is recommended to return the unit to Extron for service and
updates.
C Changes to firmware must be performed by authorized service
personnel only. Some IN1502 firmware updates must be done at
the Extron factory.
IN1502 • Reference, Parts and Accessories