Some mis-firing issues


I have a set of 5 individual Cactus V6 triggers. All of them have the latest firmware (V 1.1.019). My wife and I shoot weddings, and during the reception we have been experiencing some really frustrating mis-firing mishaps.

Typically, during the dancing, she will shoot on one camera body, and I will shoot on two camera bodies (all three in Tx mode), and we set up two speedlights with a Cactus V6 on each in Rx mode.

We place one speedlight on group A and the other on group B and we ensure all five transreceivers are on the same channel.

Usually, the night starts fine and we are both able to fire off without problems for the first 30-45 minutes. 

Then, suddenly, out of nowhere the transreceivers will stop communicating together, and they won't fire any longer. I checked to see if the batteries are dead, but no, all of the devices still have battery life left.

Also, something else that has happened several times is the Cactus will fire off the wrong group. So, for example, if I turn on only Group A on my Tx, sometimes both A and B will fire on my Rx receivers. Sometimes they will fire even if I turned both groups off on my Tx.

What is going on?

Thank you!


  • I'm not 100% sure whether you and your wife are sharing flashes, but note that the V6 is not designed to allow the same set of flashes to be controlled by two different transmitters. If two V6 transmitters attempt to control the same set of flashes then there will be strange effects, like "wrong group firing" or "incorrect power level".

    If you want to share flashes amongst multiple transmitters, you may want to consider the V6II which adds a "multi-master" mode compared to the V6.

    I do not know whether your unsupported "multi-master" usage causes  your problems, but it would be a good idea to rule that out as a source.
  • Yes sounds like you need Multi Master that the V6 II offers! :)

    Will you and your wife need to adjust the flash power?
    If only one of you is "in charge", then you may consider getting one V5 and set it to TX when you both shoot.

    Usually, the night starts fine and we are both able to fire off without problems for the first 30-45 minutes. 

    It does not have to do with time, but at that moment when both you and your wife made power adjustments and these commands drove the RX units crazy and they went into limbo mode.

    The V5 will solve this problem because all it does it sending a firing signal. No power adjustments involved.

    However if both of you need to adjust the power then getting the V6 II would be the option to go for.
    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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