What does it mean to get only part way through the "learning" process?

I have been trying to set up a profile for a Pentax 500FTZ.  I have seen elsewhere and here that people have failed to profile it.  At least one of those people only got as for as the initial incompatibility message.

But I got farther than that.  I was able to get up to the 1/2 power routine, and then got a "flash error" message (flash did not fire). Before that, though, the V6 did get it to fire after setting the guide number and hitting "OK".

So, what does this result mean?  Why wouldn't this analog flash (doesn't even have P-TTL, just TTL) be profilable?


  • @texandrews Please check what's the exact message displayed on the V6 because we don't have "FLASH ERROR" as one of them.

    My guess is that the batteries were still charging the flash capacitor while the V6 wanted to trigger the flash at 1/1 full power.  Try loading a freshly-charged set of batteries before starting the Learning Program.

    Thanks and I look forward to your updates!
    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 info@cactus-image.com.  At Cactus, we listen. 
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