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 
  • ...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 :)!
  • 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", "NIK.A.001", "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) but not by X-TTL firmware versions:  PEN.A.001 NIK.A.001 OLY.A.001.  No schedule has been released yet for an "A" version firmware on the V6 (MK1). 

    Cactus RF60X / RF60 Firmware versions A04 and A03 currently ONLY works with PEN.A.001 NIK.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.

    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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