V6II unable to sync with one or two RF60s

Recently bought a V6II with two RF60s but I have yet to successfully use them due to sync issues between the three devices.

The V6II in TX mode, with group A and B turned on, channel one and the first RF60 in S mode, assigned as group A, channel one, second RF60 in S mode, assigned as group B, same channel, are not power adjustable from the V6II. 

When I try with just the one RF60, controlling power levels is hit and miss, sometimes it works, sometimes it loses connection; the devices are a few inches apart from each other. Making the single RF60 flash is not a problem, although I rarely get the flash icon appear on my Fuji X-Pro2, even though the V6II displays Fuji as the camera and flash system when turned on.

Using Firmware Updater V1.08, V6II is on V1.1.004, release date 5/9/2016 

Both RF60s are on V204 (release date 29/9/2016).


  • ... the devices are a few inches apart from each other. ...
    If your devices are close to each other you must select the Working Range to "Short" on the TX unit.
  • Hi @fooltech, so did switching the V6 II TX to SHORT RANGE help?
    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 info@cactus-image.com.  At Cactus, we listen. 
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