How do I check the firmware version of my V6?

Press the A and D group buttons together while switching on the V6 by moving the Mode Switch to either TX or RX mode. 

The firmware version will be displayed for 3 seconds before going back to the home screen of TX/RX mode.

Suggestion: Hold the V6 with the LCD pointing to your left hand, place your thumbs on A and D group buttons, and adjust the Mode Switch with your index finger.


  • Hi,

    after upgraded to 1.0.185 firmware version and press A&D buttons displays:"USE RF CH 16". So it does not displaies any more firmware version. Any idea why? 

    Thanks, Vali 
  • goghitza said:

    ...after upgraded to 1.0.185 firmware version and press A&D buttons displays:"USE RF CH 16".

    If this happens, it means that you are also pressing the test button.

    Make sure to only press "A" & "D" and then the firmware version will be displayed.
  • Thank you! Indeed, I was pressing Test button as well :)!
  • Admin said:

    Cactus Management,

    I bought a 3 units of Cactus V6 transceiver which I tought that I can use it to my YN600EX-RT.  I'm just prostrated because it won't work. Is their any way like setting that I can use my YN to Cactus V6 transceiver? Is their any firmware update so that I can use the YN and V6? 
    I hope you will respond to my email. Thank you very much.


  • @Akoito

    Yes it is compatible as tested by another V6 user.
    Choose YN568EX-II's flash profile.

    Hope it helps!
    Antonio Lao
    Brand Manager

    To help us better help you, always state the exact firmware version installed on your Cactus device(s), such as: "1.1.013", "FUJ.1.002", "v.103".

    For the time being, Cactus V6 (MK1) running on firmware version 2.1.001 can be triggered by a V6 II (MK2) running on Multi-brand HSS firmware (e.g. 1.1.013) and not by X-TTL firmware versions: PEN.A.001 and OLY.A.001.  No schedule has been released yet. 

    Cactus RF60X / RF60 Firmware versions A01 and A02 currently ONLY works with PEN.A.001 and OLY.A.001.  Other "A" version of X-TTL firmware will be released soon. For both Multi-brand HSS and X-TTL firmware versions (FUJ, SIG, SON), install firmware version 103 / 205 on your RF60X / RF60.

    Cactus RF60 is now an off-camera TTL flash with firmware version 205 or later!

    Metz M400 (for Fujifilm) is now supported on the Cactus V6 II (HSS and TTL).

    Nikon D750 users please read this thread: 

    Fujifilm EF-X500 users please read this thread:

    Feel free to suggest an improvement or share product ideas. Contact us directly at  At Cactus, we listen. 
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