So if I understand the FW is fine with the XF and XT, but not with other Tech cameras that only use the IQ4 to run the party?
Robert B
Robert,
Short answer: Yes
Longer answer: From my testing using the IQ4, the FW works fine on my XF; FA, hard button, new rear screen things like the new Level and Histo in LV, etc. On my Arca's I can shoot using single e-shutter captures and 2-shot copal as before w/out issues. On the Arca's the rear screen options/features don't include shutter and aperture in LV like they do on the XF/XT, but as has been well-discussed, the FA is broken on non-P1 gear. I'd just used it the weekend before on the Arca's and it worked fine.
After the FW update and the notifications by several on this site, I tested using an Arca the FA and it froze the IQ, had to reboot, and pulled the batter just to ensure. The back was fine after the reboot and I've not retried the FA.
I demoed an XT last week (coincidentally a couple of days before the public release of the FW) and the full rear screen options on the XF were also on the XT; i.e., it worked on the XT like it works on my XF after the public release.
Some on this site have mentioned having issues with the FW on the XF, but not (so far) in my case.
I've elected to keep the current FW on the IQ4 instead of going back to the last released version because so far I've not used FA much and that's the only thing I'm finding is broken on non-P1 gear. My hope is that a fix is released ASAP so that I'm not limited or restricted from using FA on my Arca's.
Hope this helps.
Cheers,
Robert