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Reference
4.Firmware Update
1.Log in the YONGNUO official
website (www.hkyongnuo.com)
t o d o w n l o a d t h e f i r m w a r e
update software and the latest
firmware.
2.Power off, use USB-Micro cable
(do not include)connect to PC.
3.Press the <
MODE
> button and
set the power switch to <
ON
>,
t h e s c r e e n w i l l e n t e r i n t o
firmware upgrade interface.
4.Complete the firmware upgrade
operation according to the
prompt of software.
3.Clearing Transmitter Settings
Press function buttons 2 and 3
simultaneously for 2 seconds or
longer, the
transmitter
settings
are
cleared
.