17 hours ago, Tarek Yag said:

Yes, you strictly need to match the Baud Rate of the connection with the inverter. Try first if you can make a successful connection with the Inverter via WatchPower, then, most importantly, close it before trying to reflash any firmware. I attached the correct cable pinout, if you don't get a connection via WatchPower, switch lines 1 (TX) and 2 (RX) on your RJ45 cable side.

I have run WatchPower App with my current connection (Window 10, Adapters, Drivers) and COM Port in WatchPower disconnected after about 20 seconds so i failed to run it, Now I install Windows 7 with same adapters and WatchPower connected with my COM successfully.
So now can i update my MCU FW without brick it ?!

Ah, it's most likely a driver issue, just as @bratpit suggested. I doubted it since the beginning but didn't want to jump to conclusions. Thank you @Khalil Koja for doing more testing and giving feedback.

Well, Prolific drivers have a well-known issue with previous counterfeit products that were sold worldwide and Prolific acted well against them, and I don't blame them! It seems like you have bought one of the counterfeit ones which are still wide spread all over the world, especially in your region. You need to use driver version 3.3.2.102 or less to make it work with newer Windows editions.

Anyway, yes, now that you have got a successful connection in WatchPower, make sure you exit it completely (check notifications area) and then try to reflash your MCU. Please remember, we don't provide any guarantees at all, it's all on your own responsibility if anything goes wrong. We only volunteer help as much as we can to freely willing people like you.

Good luck!

22 hours ago, alan_1969uk said:

I have had the same issue for months, I purchase multiple connector, leads however still can’t communicate to update firmware or use watch power. I purchase inverter second hand and the previous owner who informed me that he updated the firmware to use pylontech batteries and following the update lost all communications with PC & batteries.

The inverter works with my voltronic batteries however I cant resolve the issue with the RS232 port. I get the same message when I try and update the MCU firmware. 

There are too many reasons why an RS232 connection would fail, not only with Axpert inverters. You need to troubleshoot the problem step by step and rule out each reason. The most common problems are driver-related, so start there.

On 2024/05/28 at 5:22 AM, Tarek Yag said:

dited 15 hours ago by Tarek Yag
Replaced HEX files with HEX packages

As you edit the files

could you have came to conclusion that could help me as I am a bit overwhelmed 

does the full package shows the date of each update 

as now I have all attached 

and don’t know which is better 

1-is king series has the same firmware as my VMIII ? 
2-can I use 7x.xx firmware with inverter that has 6x.xx 

3- I have tried 60.89 and it doesn’t fix the fan issue on the other hand the 60.76 has solved it 

 

Edited September 3, 20241 yr by esmail-kassir
Remove attachments

@esmail-kassir, first of all, please remove all the attachments in your latest post, as they're all duplicate copies of attachments we already have here on the forums, and on our own computers, so no need to re-upload them.

Regarding your questions, I'll give you quick answers now, though you can do some research in the forums as they're all already answered in multiple posts in the forums.

2 hours ago, esmail-kassir said:

does the full package shows the date of each update

It does not. The only clue we have is the file modification date, which is included now in every HEX package I attached.

2 hours ago, esmail-kassir said:

and don’t know which is better

There's no way at all to figure this out, it's just trial and error, and you keep what's better for you in the end. Just see how @bratpit is testing various firmware versions. So you won't get any recommendations, it's totally up to you to select the firmware version and test it, no warranties.

2 hours ago, esmail-kassir said:

1-is king series has the same firmware as my VMIII ?

Absolutely not! Each model has it's own firmware type, you should never ever mix them because it will brick the inverter. The only exception so far is the TWIN models firmware, which (seem) to be interchangeable between VM III and VM IV, but it's never officially confirmed.

2 hours ago, esmail-kassir said:

2-can I use 7x.xx firmware with inverter that has 6x.xx

These firmware makers don't seem to practice any version controlling or standard software development methods. This means that firmware version numbers don't necessarily give correct clues as other standard software do. So, yes you can reflash different major versions of firmware.

2 hours ago, esmail-kassir said:

3- I have tried 60.89 and it doesn’t fix the fan issue on the other hand the 60.76 has solved it

Again, it's trial and error and all on you.

On 2024/09/03 at 9:26 AM, Tarek Yag said:

On 2024/09/03 at 6:37 AM, esmail-kassir said:

2-can I use 7x.xx firmware with inverter that has 6x.xx

These firmware makers don't seem to practice any version controlling or standard software development methods. This means that firmware version numbers don't necessarily give correct clues as other standard software do. So, yes you can reflash different major versions of firmware.

I would be extremely careful with this in general. The VM III and VM IV Twin models seem to be the messiest, with mostly 60.xx, some 76.xx, one 84.xx, and a 70.xx all apparently for the same hardware! With the main firmware for these models, all you have to check is that the firmware is written for VM III or VM IV, and that it's for a Twin model. These models all use the same '28062 DSP chip, so there is no incompatibility there.

The VM III and VM IV displays are completely different, and so the display firmwares for these two models will always be different from each other. It's probably best to stick to 25.xx for VM III Twin display firmware, and 39.xx for VM IV Twin display firmware. Even though display firmwares version 57.xx appear to be VM III Twin compatible, and 63.xx appear to be VM IV Twin compatible.

Edit: Be extra careful with 52.xx and 57.xx firmwares; see later posts in this thread. 52.07 is for a Kodak OG-PLUS 6.2, which seems to be an Axpert King II, but unlike all other Axpert King IIs that I know of, it has a round (colour) display!

Edited September 5, 20241 yr by Coulomb

On 2024/08/31 at 7:55 PM, Khalil Koja said:

#1

Axpert VM III 6000W Twin

Sn: 96342304xxxxxx

MCU FW: 57.08 to 25.08

Inverter FW: 60.05

 

#2

Axpert VM III 4000W

Sn: 96322110xxxxxx

MCU FW: 119.12 to 19.18

Inverter FW: 55.03

 

Both failed to upgrade MCU FW (Connection Failed!)

I have tried :

3 different adapter (USB to RS232) and test them successfuly with check PL2303 tool.

2 different cable (RS232 to LAN).

 

 

 

I Have successfully update both inverts (DSP & MCU) FWs and everything is good but the display buttons for VM III TWIN didn't work after the update.
The screen, LED flashes and icons all OK but i can't step up/down any more !

Axpert VM III 6000W Twin

Sn: 96342304xxxxxx

MCU FW: 57.08 to 25.12 / 25.08 (same results)

Inverter FW: 60.05 to 60.89
 

13 hours ago, Khalil Koja said:

the display buttons for VM III TWIN didn't work after the update.
The screen, LED flashes and icons all OK but i can't step up/down any more !

That might be the difference between 57.xx display firmware and 25.xx firmware: the way that the buttons are scanned. That seems crazy to me, but what do I know.

Unfortunately, I don't have any 57.xx firmware to check, or for you to revert back to.

Presumably, you can still use the inverter with monitoring software?

7 hours ago, Coulomb said:

Unfortunately, I don't have any 57.xx firmware to check,

I do however have 52.07 for King II Twin and others, and usually King 1 goes with VM III old, and King II goes with VM III new. Did I mention that these major firmware version numbers are confusing?

So I find that 52.07 uses different GPIO pins to 25.12, or more accurately the same pins but in a different order.

[ Edit: I now realise that 52.07 is for a Kodak OG-PLUS 6.2, which has a round display, yet it's a King II Twin. It seems that only Kodak Kings IIs (and possibly only the Twins of these) have the round display. ]

There is a slight chance that the keys are still working, just jumbled up. So maybe the escape key is now the down key, or similar. Worth a try? If so, the solution might be tiny stickers over the key names 🤪

Edited September 5, 20241 yr by Coulomb
Added second paragraph

4 hours ago, Coulomb said:

Presumably, you can still use the inverter with monitoring software?

Yes.

 

3 hours ago, Coulomb said:

There is a slight chance that the keys are still working, just jumbled up. So maybe the escape key is now the down key, or similar. Worth a try? If so, the solution might be tiny stickers over the key names 🤪

Unfortunately All the keys not working. 

What make me confused that I have also update another VM III Twin MCU (it has a Touch keys not buttons!) from 57.07 to 25.08 and the keys work fine!

Edited September 5, 20241 yr by Khalil Koja

2 hours ago, Khalil Koja said:

What make me confused that I have also update another VM III Twin MCU (it has a Touch keys not buttons!) from 57.07 to 25.08 and the keys work fine!

Ah! I thought ALL VM IIIs (old type and new type) have the removable display.

* Does this VM III with the touch keys have a round (colour) display?

* Is it branded Kodak?

I am also very confused by the above (i.e. that 57.07 → 25.08 works for the VM III). Assuming that the 57.07 is a round (colour) display firmware, as I've just realised the 52.07 is.

Is it possible that you confused 52.07 and 57.07 somewhere? It's a long shot.

Edited September 5, 20241 yr by Coulomb

16 minutes ago, Coulomb said:

* Does this VM III with the touch keys have a round (colour) display?

No, it's removable display as you know it but instead of physical buttons it has touch ones.

 

19 minutes ago, Coulomb said:

* Is it branded Kodak?

No, It's Triple A Brand, also there are many brands VM III inverters with removable display have touch buttons.

 

23 minutes ago, Coulomb said:

Is it possible that you confused 52.07 and 57.07 somewhere? It's a long shot.

I have checked many inverters VM III Twin with MCU FW: 57.xx, i can get you more info like SN, DSP FW if you want.

11 minutes ago, Khalil Koja said:

It's Triple A Brand

I've not heard of these.

11 minutes ago, Khalil Koja said:

there are many brands VM III inverters with removable display have touch buttons.

Oh! That's news to me.

11 minutes ago, Khalil Koja said:

I have checked many inverters VM III Twin with MCU FW: 57.xx, i can get you more info like SN, DSP FW if you want.

Just a description and perhaps a photo of these touch buttons, please. Now the multiplicity of display firmware versions is starting to make a little sense.

I assume that all models with the round/colour display have touch buttons; is that correct?

Thanks in advance!

23 minutes ago, Khalil Koja said:

It's Triple A Brand

Ah! Do they look like this? I can't tell from the photo if those are switch buttons or touch buttons.

I note that Must inverters are not made by Voltronic, and often have non-Voltronic firmware (e.g. setting numbers different to that of Axpert, yet mostly do the same thing).

Edited September 5, 20241 yr by Coulomb

8 minutes ago, Coulomb said:

I've not heard of these.

@Coulomb the same as mine and @mohamed.kh , there is a photo for it in page 1 

 

21 hours ago, Khalil Koja said:

MCU FW: 57.08 to 25.12 / 25.08 (same results)

Inverter FW: 60.05 to 60.89

what is the brand name for this inverter who has the issue 

14 minutes ago, Coulomb said:

Ah! Do they look like this? I can't tell from the photo if those are switch buttons or touch buttons.

I note that Must inverters are not made by Voltronic, and often have non-Voltronic firmware (e.g. setting numbers different to that of Axpert, yet mostly do the same thing).

no this inverter from must mainfactor 

 

im attached image for Triple A from voltronic 

21 minutes ago, Coulomb said:

I assume that all models with the round/colour display have touch buttons; is that correct?

Yes only touch buttons.

 

25 minutes ago, Coulomb said:

Just a description and perhaps a photo of these touch buttons, please. Now the multiplicity of display firmware versions is starting to make a little sense.

This VM III Twin TRIPLE A Brand:

15 minutes ago, esmail-kassir said:

@Coulomb the same as mine and @mohamed.kh , there is a photo for it in page 1 

 

what is the brand name for this inverter who has the issue 

Infinite Brand VM III Twin 6000W (physical buttons removable display)

11 minutes ago, mhd_murad said:

im attached image for Triple A from voltronic

Ah! Boy am I learning a lot today. So Triple A must be one of those resellers (like EASun and several others I believe) that rebrand Voltronic but also Must or other clone/workalike products. That QR code says "Originally manufactured by Voltronic Power". At last, a way of telling that an inverter is genuine!

I've noticed those orange removable displays years ago. But I foolishly assumed that it was just an artistic thing to "go with" the orange blob on top. Sigh.

Now I'll have to figure out how one of those buttons does up and down at the same time (at least, that's what it suggests to me).

Thanks for the lesson!

12 minutes ago, Coulomb said:

Now I'll have to figure out how one of those buttons does up and down at the same time (at least, that's what it suggests to me).

In touch buttons VM III you can only step in same direction to check other screens which is bad thing! 

7 hours ago, Coulomb said:

Now I'll have to figure out how one of those buttons does up and down at the same time (at least, that's what it suggests to me).

no it only goes down which is annoying if u skipped the setting u want you'll have to to go over again from the start🫠

On 2024/09/05 at 3:16 PM, Coulomb said:

I assume that all models with the round/colour display have touch buttons; is that correct?

I believe so! I've never heard of a VM IV with push buttons.

On 2024/09/05 at 3:26 PM, Coulomb said:

Ah! Do they look like this? I can't tell from the photo if those are switch buttons or touch buttons.

From what I've seen in the local market, these inverters are cheap clones and does not have legitimate Voltronic inverter signs on their stickers, and have a very different LCD display (with different icons too).

On 2024/09/05 at 3:58 PM, Coulomb said:

Ah! Boy am I learning a lot today.

Me too 😁. Again, from what I've seen in the local market, at least this year, I can confirm that Triple A brand sells both original Voltronic inverters, and cheap MUST inverters which only looks like a Voltronic. But also please keep in mind that this year the local market got flooded with cheap inverters, unknown brands, and a whole bunch of clones of every brand, it is a real mess here.

On 2024/09/05 at 11:58 AM, Khalil Koja said:

What make me confused that I have also update another VM III Twin MCU (it has a Touch keys not buttons!) from 57.07 to 25.08 and the keys work fine!

Would you please redo the MCU reflash on the faulty unit to see if the keys work again by any miracle?

Edited September 7, 20241 yr by Tarek Yag
press buttons → push buttons

9 hours ago, Tarek Yag said:

I believe so! I've never heard of a VM IV with press buttons.

I think you miss understand it:

VM III has removable screen with Touch / Non Touch buttons.
VM IV has rounded screen with Touch buttons only.

9 hours ago, Tarek Yag said:

Would you please redo the MCU reflash on the faulty unit to see if the keys work again by any miracle?

I have already reflash it with 25.08 and 25.12 with same results (buttons not working).

Edited September 7, 20241 yr by Khalil Koja

13 hours ago, Khalil Koja said:

I think you miss understand it:

VM III has removable screen with Touch / Non Touch buttons.
VM IV has rounded screen with Touch buttons only.

We all are on the same page already. I wrote earlier "press buttons", and just altered it to "push buttons", which both mean the exact same. Coulomb was just thinking aloud and saying the same too.

13 hours ago, Khalil Koja said:

I have already reflash it with 25.08 and 25.12 with same results (buttons not working).

I'm trying to re-think the whole situation again with you. Would you please provide a photo of the sticker of this inverter in particular?

As we begin discussing differences in firmware behavior and bugs, does anyone know what this specific bug could be?

I have a Triple A inverter (Voltronic Axpert VM 3) paired with Felicity 200 48V batteries, and I’ve been encountering the ‘BP’ error at various intervals. Sometimes it happens once a day, while other times it may only occur once a month. When the error occurs, the alarm beeps, the error code appears briefly, then disappears after another beep, and the screen returns to normal. In some instances, I wake up to find the inverter completely powered off.

About two weeks ago, I woke up to find everything functioning normally, but I noticed the battery voltage was reading around 24V, even though my battery setup is 48V. Despite this, the system was still running and powering the loads, but the inverter wouldn’t charge the battery. I updated the firmware to version 60.76, and the issue seemed to be resolved.

However, this morning I woke up and found the inverter turned off again. After restarting it, everything appeared normal except for an incorrect time in the logs on the mobile application.

Does anyone know why the inverter shuts off like this?

Additionally, does anyone know why charging doesn’t completely stop when I select ‘charge only from solar’? It continues charging at 10A, with the charging LED remaining solid. It also pulse charges at 100%, but only when the grid is available; it doesn’t pulse charge via solar power.”
 

maybe you msy saw this same behavior in the local brands @Khalil Koja @Tarek Yag @mhd_murad

5 hours ago, esmail-kassir said:

Does anyone know why the inverter shuts off like this?

Since you have a monitoring app, please provide a data chart of your battery's voltage from the same day the inverter shutdown, so that we can check whether the voltage drop has some pattern or not. Additionally, if you can provide charts from several days having this sudden shutdown happening, it would be perfect for debugging! The best and fastest way to diagnose your problem is to test another inverter or another battery in your solar system, if possible.

5 hours ago, esmail-kassir said:

Additionally, does anyone know why charging doesn’t completely stop when I select ‘charge only from solar’? It continues charging at 10A, with the charging LED remaining solid. It also pulse charges at 100%, but only when the grid is available; it doesn’t pulse charge via solar power.”

Can you relate to the following issue which I previously replied to?

https://powerforum.co.za/topic/19010-voltronic-axpert-vm-iii-twin-4kw/page/3/#comment-205780

5 hours ago, esmail-kassir said:

maybe you msy saw this same behavior in the local brands

I'm sorry, never heard of this issue before! In general, my shopping habit is to buy best devices from best reputation local brands, essentially to avoid cheap imports as much as possible, which is usually the case here, unfortunately!

Edited September 9, 20241 yr by Tarek Yag