About This File
This is unpatched main (U1) firmware version 74.04 for the Axpert MKS IV. Do not confuse with the Axpert VM IV which looks similar, or the Infinisolar V IV which looks identical (possibly apart from the colour). This will not work if you happen to have a model that comes with the '28066 DSP chip; see this post for details.
Use at your own risk.
