Kalito Posted January 22 Share Posted January 22 (edited) I need to install 77.00 firmware. What is the difference between MKS II and MKS II Plus? I found out the hard way that they are not the same machines when I bricked one trying to give it firmware that would match other MKIIs in parallel. Edited January 23 by Kalito Quote Link to comment Share on other sites More sharing options...
Coulomb Posted January 23 Share Posted January 23 23 hours ago, Kalito said: I need to install 77.00 firmware. Not in my collection, sorry. 23 hours ago, Kalito said: What is the difference between MKS II and MKS II Plus? I don't know. Plus usually refers to a smaller model, like 24 V and 3 kVA or so, that has a more powerful solar charge controller (some of these small models have 600 W solar chargers!). But you mention 5 kW so that's not it. The Axpert MKS II is basically obsolete now. I don't think that Voltronic have produced any for many years. But the clone manufacturers seem to have come across design documents for them, so there are many MKS II clones about. Some of the clone makers may have enhanced the design in various ways, and these may no longer be compatible with genuine Voltronic firmware. My guess is that 77.00 is such one such incompatible clone firmware. Quote Link to comment Share on other sites More sharing options...
Kalito Posted February 5 Author Share Posted February 5 On 2024/01/23 at 1:03 PM, Coulomb said: Not in my collection, sorry. I don't know. Plus usually refers to a smaller model, like 24 V and 3 kVA or so, that has a more powerful solar charge controller (some of these small models have 600 W solar chargers!). But you mention 5 kW so that's not it. The Axpert MKS II is basically obsolete now. I don't think that Voltronic have produced any for many years. But the clone manufacturers seem to have come across design documents for them, so there are many MKS II clones about. Some of the clone makers may have enhanced the design in various ways, and these may no longer be compatible with genuine Voltronic firmware. My guess is that 77.00 is such one such incompatible clone firmware. The MKS11 Plus is a genuine Voltronics product apparently manufactured specifically for a particular company here. The model number is unique to the company that requested the build. Through them I got the firmware and unbricked the device! Coulomb 1 Quote Link to comment Share on other sites More sharing options...
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