Firmware update for the AX2500

Hello.

Could I update my old AX2500 with the current "<FONT face=Arial>version 1.5a, May 22, 2004" firmware from the ROBOTEQ website or it won't work? It's now clear and I don't want to fall in a dead end...</FONT>
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<FONT face=Arial> If it does not work, where could I get the latest firmware version for it?</FONT>
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<FONT face=Arial> I bought the controller from e-Bay from a guy who never even tried it since he has it so it's a old version.</FONT>
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<FONT face=Arial> When I query the controller for the current, it is always giving me back ZERO for the measure... I am curious to see if the new firmware solves that...</FONT>

The latest software revision that will work on the AX2500 is v1.3. It may be downloaded at <A href="dev.roboteq.com/dev1/download/robosetup13.zip" target=_blank>www.roboteq.com/download/robosetup13.zip
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Regarding the Amps reading, the sensors are there to measure high current (to over 120A). It is possible that the controller will report 0 if you have only a few amps flowing (1 to 3). Accuracy improves at higher currents.