Yongnuo YN-622C User's Guide download pdf (Page 20)

The Other YN-622C User Guide v.4.07

23/07/2014 Part 1 – The System Page 20 of 62

4. Check the Firmware

622C

When first released in 2012, there were some fixes to the firmware. As the 622C does not have a

user-upgrade method, early units needed to be returned to Youngnuo for factory upgrading. The

firmware has been stable for some time.

C-TX

Firmware in the C-TX can be updated by the user. Ensure that the unit’s Firmware is the latest

version.

• A computer-to-USB 2.0 Mini-B cable (e.g.Canon USB cable) is required.

• A Windows computer platform is required.

• See page 43 for full details for downloading and installing firmware updates.

Version History

1.00 Pre-release version.

1.01 First commercial release built in. Upgrade required only for pre-release testers.

1.02 Added YN560-TX proxy mode. Improved stability.

Dfu_updater Changes Updater display from F U to U P. Not required after v.1.03.

1.03 Made backlight/setting time longer.

5. Instal a 622C Transmitter or C-TX Controller

• Turn back the hot-foot’s locking ring up to the case to

fully withdraw the locating pin.

• Mount the unit in the camera’s hot-shoe. Use the thumb

to press the foot firmly forward.

• Clamp the locking ring onto the hot-shoe. The locating

pin will engage.

• Turn on camera and transmitter/controller.

• If the unit is a 622C Transmitter, press half-shutter or

open External Flash menus to activate.

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Yongnuo YN-622C User's Guide Page 20