So I had an old #11 (v1) camera.
Recorded some stuff, then upgraded it to the latest #18 firmware, just by changing the #18 bin firmware name to the #11's firmware name, and following the regular upgrade procedure.
Works fine. Things I noticed on the #18 firmware (that is running on my #11 v1) (besides that you can now configure stuff):
- colors are a lot warmer (not necessarily a good thing, but its ok, they're also warmer on the real #18)
- audio is extremely low, even when set to "high"
- update: pictures in fact do work
- i didn't get any corruption when switching from dark to light background very fast, i suppose it was an issue from the #18 firmware bugs only
so if this is worth upgrading v1s? well, I guess so. the sound is usually the sound of the prop, so it's no big deal. the old fw works ok, but being able to set exposure and so on is nice. the color switching is also smoother on the #18 firmware, which I like. Oh yeah, and don't forget that you probably can't go back to the old fw