User Manual
FrSky Firmware Update How-to www.FrSky-rc.com
FrSky Firmware Update How-to
Introduction: Frsky are committed to ongoing development. In order to enjoy the benefits of the latest
releases, we invite Frsky users to upgrade your equipment at no cost. This document serves as a guide for users
to update FrSky system firmware to a new version. For detailed update steps, please kindly refer to the
following.
Requirements: FrSky firmware upgrade utility software, FrSky firmware ROM update file, FrSky Serial
cable or USB cable, driver for USB cable.
Step1:
Browse onto FrSky’s website www.frsky-rc.com
or open the CD in two-way combo, download and
save the file named “frsky_upgrade.rar” and a new
firmware ROM file (for example,
“fdd_tx_romb_build_100525.frk”).
Unpack the RAR file to a new directory (create a new
folder)
Step 2:
Set the two module’s switches to Firmware Upgrade
Mode (both ON for Switch 1 and Switch 2, see
instruction manual 6.1.1-c for detailed information)
Step3:
Plug in FrSky Serial or USB cable into computer
port. Wait while Windows detects and install driver
named “cp210x_std_driver.rar” for USB cable.
(We take USB cable here for example.)