Shark111

Hey there, 
 
I've uploaded the firmware update to the downloads section, you should find it there 👍🏼 Firmware for Axpert V 5kw PWM https://powerforum.co.za/files/file/134-firmware-for-axpert-v-5kw-pwm/

I note that the "P" in the model name indicates that it's a PWM model; that means different and incompatible firmware from the far more common MPPT models. Most people (not including me) prefer high voltage strings of panels; with a PWM model, you can only use one panel in each "string" (unless they are toy "12 V" panels). So most people don't have PWM models. Don't think "oh the model number is the exact same except for one letter right at the end, it must be compatible".
EDIT: Sigh. I posted before examining the firmware.
This seems to be a modern firmware that, unlike its predecessors, CAN handle either MPPT or PWM firmware (the Solar Charge Controller handles all the differences, as it always should have). This firmware also handles 5000 VA and 3000 VA models, both PF1 and PF0.8, and probably also 1500 W (PF0.8 only, i.e. 1200 W).
Edit 2: These appear to be Axpert VM II models. I didn't think that Voltronic were producing these any more, but perhaps they saw all the clone makers selling many of them, and decided to copy the clones, as it were, with legitimate versions.

@Shark111 hi, if you have indeed set the inverter to PYL, and you have unsuccessfull comms the inverter will flash a code 61 indicating loss of comms.
So if you think you have comms, unplug the bms cable and wait until 61 appears. It may take a while. If it indeed appears you had good comms. 

If the brackets flash you have succesful bms communication.

These models don't have an RS-485 port or firmware to talk to the battery's BMS. So they make a crude guess of state of charge assuming it's a lead acid battery, so the guess is almost completely useless. An external coulomb counter like a Victron BMV will help, if you end up keeping it. Or third party monitoring software that can talk to the BMS.