huh, there is no otherfirmware out there do notr know what you're talking about, we at the forum discuss......
if you're loading Fw and not ment for cam, but says it isfor theZ700 youll run into issues, and they cause problems. I have had just that , and fixed them, with just some simple steps.
Since AIPTEK doesnot respond or keeps hush hush here, the latest is 2703. yes guys its the latest. but unsure if for the cam
if you want a issued firmware sure we can post it, but not from me.
class 2 will do just fine with the fw2503. my 2 cents.