It was added to Anduril after (Oct, 2019), FW3A was released in summer 2019 time frame I think. I don’t think lumintop is doing new firmware on current productions either. So they should all have the same firmware.
Well I have to say that I haven’t really had the FW3A for long but have exercised many of the features and so far haven’t had any problems - everything has worked perfectly so far.
Hats off to Toykeeper and the rest of the FW3A team and thanks for all their efforts!
For older Andúril versions that don't have the version check function yet, it's possible to determine the version with the help of the features it has. Here is a very helpful post made by d_t_a which lists features and the firmware dates when they were introduced.
Lumintop currently seems to be shipping lights with 2019-06-27 firmware, the FWxx lights that I bought in the last three months all came with that version (i.e. with reset function, but without version check function). I have had older lights, like my FW3C, that came with 2019-05-22 firmware, and of course the very first FW3A lights came with an even older firmware (without 2-level lockout).
I’ve tested FW3A with different Anduril versions — I can’t be too sure which exact Anduril firmware, but they are by trying out Anduril functions that were added.
Eg. my first FW3A doesn’t have the manual/automatic memory toggle (I believe this is the 2019-05-22 firmware).
Next FW3A has manual/automatic memory toggle (so it’s newer), but doesn’t have the “factory reset” function.
The latest FW3A I ordered now has the “factory reset” function (via 13 clicks-hold), but doesn’t have “firmware version check” function).
So it looks like Lumintop does install new firmware when it’s available (as Toykeeper mentioned when I asked her). (Installed Anduril version may not always be the very very latest available firmware, but at least they do update it regularly)…
Not having version check may not necessarily be “very old”, although it’s older than the ones with version check.
Out of the several FW series flashlights I have, only the FW1A Pro and FW4A had version check (both blink out 2019-09-28).
The other FW series I tested, do not have version check, but have the factory reset function (eg. newer FW3A, FW21 Pro) (13 click-hold to do factory reset).
(My earliest FW3A doesn’t have “manual memory” feature.)
I would have expected the FW21 Pro to use a later firmware version, with the version check function, but it used even older firmware than the FW1A Pro and FW4A, which I think were released earlier than the FW21 Pro). I believe the X9L also doesn’t have the Anduril version with version check either, despite being one of the newest models.