I have a 11kw twin inverter ( voltronic ) with 78.06 and 38.08 and i have the same problem with mppt algorithm, 90v stuck, and so on. Do someone have and know a version that i can reflash on it ?

On 2023/09/06 at 12:27 AM, add1c7ed55 said:

I have a 11kw twin inverter ( voltronic ) with 78.06 and 38.08 and i have the same problem with mppt algorithm, 90v stuck, and so on. Do someone have and know a version that i can reflash on it ?

As far as I know, there is no 78.xx firmware update available to patch, and I don't think that there is a 9x.xx firmware that suits the Axpert Max E 11 kW twin.

We just have to wait for a suitable update to appear, unfortunately.

3 hours ago, Coulomb said:

Din câte știu, nu există nicio actualizare de firmware 78.xx disponibilă pentru corecție și nu cred că există un firmware 9x.xx care să se potrivească cu Axpert Max E 11 kW twin.

Trebuie doar să așteptăm să apară o actualizare adecvată, din păcate.

For the inverter 8kw i tried to flash a firmware that was for 28066 but my dsp was 2806 and i didtn brick it, only the update didnt start. Do u think i can try the 68.xx for this even the dsp is not that it.would be ? Will work the same, as only not start the update?

16 hours ago, Coulomb said:

As far as I know, there is no 78.xx firmware update available to patch, and I don't think that there is a 9x.xx firmware that suits the Axpert Max E 11 kW twin.

We just have to wait for a suitable update to appear, unfortunately.

I have a new firmware from anenji, can u verify or see what differences are between it and 68.xx that u have?

MAXII11K_TWIN_6508.7z

17 hours ago, add1c7ed55 said:

For the inverter 8kw i tried to flash a firmware that was for 28066 but my dsp was 2806 and i didtn brick it, only the update didnt start

Yes. The '28066 firmwares have a different Arena flash tool that sends a different command.

17 hours ago, add1c7ed55 said:

Do u think i can try the 68.xx for this even the dsp is not that it.would be ? Will work the same, as only not start the update?

If you mean can you swap control boards, and the control boards are for the exact same model only for the other DSP type, will it work?

That's unknown. My guess is that yes, it would work.

But I don't see that this solves anything.

What am I missing here?

4 hours ago, add1c7ed55 said:

I have a new firmware from anenji, can u verify or see what differences are between it and 68.xx that u have?

Thanks! That's the first 65.xx firmware that I have seen.

I suspect that it's for an Axpert Max II 11 kW Twin '2809. So the same as what you have except for the round colour display and the different DSP.

I still haven't found why the DSP firmware has to be any different just because it's a round display.

It takes a fair bit of time to compare firmwares; I'll have a go soon.

Edit: I also don't have any 68.xx firmwares. Did you mean 64.xx firmwares (I have several of these), or did you mean to compare 11 kW and 8 kW firmwares? These actually should be comparable, since all the constants related to the different power ratings for MAXs are held in RAM, and are initialised in one function.

Edited September 7, 20232 yr by Coulomb

2 hours ago, Coulomb said:

Mulțumiri! Acesta este primul firmware 65.xx pe care l-am văzut.

Bănuiesc că este pentru un Axpert Max II 11 kW Twin '2809. Deci, la fel ca ceea ce aveți, cu excepția afișajului color rotund și a DSP-ului diferit.

Încă nu am găsit de ce firmware-ul DSP trebuie să fie diferit doar pentru că este un afișaj rotund.

Este nevoie de ceva timp pentru a compara firmware-urile; Voi încerca în curând.

Edit: De asemenea, nu am niciun firmware 68.xx. Te-ai referit la firmware-uri 64.xx (am câteva dintre acestea) sau ai vrut să compari firmware-urile de 11 kW și 8 kW? Acestea ar trebui să fie de fapt comparabile, deoarece toate constantele legate de diferitele puteri nominale pentru MAX sunt păstrate în RAM și sunt inițializate într-o singură funcție.

Yes. My mistake, 64.xx. they gave me display firmware too. Yes, is for 11kw twin. But i wanted to.know is.good for my dsp, cauze i dont think they know very well about the 2 versions of dsp.

Remote Panel_Reflash_MCU(38.11).rar

10 hours ago, add1c7ed55 said:

But i wanted to know is it good for my dsp, cauze i dont think they know very well about the 2 versions of dsp.

It won't update, just as your mismatched 8 kW didn't update.

It's sad that some resellers don't know about the different DSPs.

However, the difference between '28066 and '2809 firmware is just one start-up call to a function in ROM (Read Only Memory, different from Flash memory). So I might be able to modify this '2809 firmware to become '28066 firmware, then package it up with a different reflash tool and it should work. I did that once before; I can't recall if I got any feedback on whether it worked or not. I need to do some checking.

18 hours ago, Coulomb said:

It won't update, just as your mismatched 8 kW didn't update.

It's sad that some resellers don't know about the different DSPs.

However, the difference between '28066 and '2809 firmware is just one start-up call to a function in ROM (Read Only Memory, different from Flash memory). So I might be able to modify this '2809 firmware to become '28066 firmware, then package it up with a different reflash tool and it should work. I did that once before; I can't recall if I got any feedback on whether it worked or not. I need to do some checking.

this 65.xx is for 11k twin, and i have a 11k twin, do u think will work? cause i dont know what dsp i have, i have only firmware 78.04. can check what differences are between 64.xx that u have, the 2 versions, and this 65.xx ?if its now ok .. can patch it ? thanls

Pe 08.09.2023 la 4:17, Coulomb a spus:

Nu se va actualiza, așa cum 8 kW nepotriviți nu s-au actualizat.

Este trist că unii revânzători nu știu despre diferitele DSP-uri.

Cu toate acestea, diferența dintre firmware-ul '28066 și '2809 este doar un apel de pornire la o funcție din ROM (Read Only Memory, diferită de memoria Flash). Așa că s-ar putea să pot modifica acest firmware „2809 pentru a deveni firmware „28066, apoi să-l împachetez cu un alt instrument de reflash și ar trebui să funcționeze. Am mai făcut asta o dată; Nu-mi amintesc dacă am primit vreun feedback despre dacă a funcționat sau nu. Trebuie să fac niște verificări.

Actualizez display-ul mcu cu 38.11, a funcționat, dar 65.08 nu se poate actualiza, cred că am nevoie de instrumentul arenaflash si firmware pt 28066.

Edited September 9, 20232 yr by add1c7ed55

 

this 65.xx is for 11k twin, and i have a 11k twin, do u think will work?

No. 65.xx is for the Axpert Max II 11 kW Twin with '2809 DSP; 78.xx is for an Axpert Max II 11 kW Twin presumably with the '28066 DSP (I don't have 78.xx firmware to check or compare). 

> [ Google translation from Romanian ] I update the mcu display with 38.11, it worked, but 65.08 cannot be updated, I think I need the arena flash tool and firmware for 28066.

That seems to prove that you have the display (colour, round, non-removable) that is needed to pair with 65.xx, but that you have the opposite DSP chip.

I have to decide whether I want to chance bricking your machine by attempting a patch to change a '2809 firmware into a '28066 firmware. It's possible that the control boards are different, using a different mapping of pins to functions, or just using different GPIO pins for example.

For the record, I've just been comparing main firmware versions 65.08 and 64.62. I'm 99% sure that these are Axpert Max II and Axpert Max E firmwares respectively. The major difference as far as main firmware is concerned seems to be that the II models devolve the LED processing to the display processor. The E models with the removable display can't do that, as the display can't connect to the LEDs (there isn't enough wiring available). This makes it impractical to convert II firmware to E firmware or vice versa, plus there may be other differences, even for users who don't care about the LED control.

 

Edited September 9, 20232 yr by Coulomb

 

No. 65.xx is for the Axpert Max II 11 kW Twin with '2809 DSP; 78.xx is for an Axpert Max II 11 kW Twin presumably with the '28066 DSP (I don't have 78.xx firmware to check or compare). 

> [ Google translation from Romanian ] I update the mcu display with 38.11, it worked, but 65.08 cannot be updated, I think I need the arena flash tool and firmware for 28066.

That seems to prove that you have the display (colour, round, non-removable) that is needed to pair with 65.xx, but that you have the opposite DSP chip.

I have to decide whether I want to chance bricking your machine by attempting a patch to change a '2809 firmware into a '28066 firmware. It's possible that the control boards are different, using a different mapping of pins to functions, or just using different GPIO pins for example.

For the record, I've just been comparing main firmware versions 65.08 and 64.62. I'm 99% sure that these are Axpert Max II and Axpert Max E firmwares respectively. The major difference as far as main firmware is concerned seems to be that the II models devolve the LED processing to the display processor. The E models with the removable display can't do that, as the display can't connect to the LEDs (there isn't enough wiring available). This makes it impractical to convert II firmware to E firmware or vice versa, plus there may be other differences, even for users who don't care about the LED control.

 

I have 11k.twin with removable display. Not round ! And probably i need firmware for 28066...how i can flash ? I need a firmware for this dsp, or u can modify something, but to be 100% sure that will can flash in good conditions.

 

No. 65.xx is for the Axpert Max II 11 kW Twin with '2809 DSP; 78.xx is for an Axpert Max II 11 kW Twin presumably with the '28066 DSP (I don't have 78.xx firmware to check or compare). 

> [ Google translation from Romanian ] I update the mcu display with 38.11, it worked, but 65.08 cannot be updated, I think I need the arena flash tool and firmware for 28066.

That seems to prove that you have the display (colour, round, non-removable) that is needed to pair with 65.xx, but that you have the opposite DSP chip.

I have to decide whether I want to chance bricking your machine by attempting a patch to change a '2809 firmware into a '28066 firmware. It's possible that the control boards are different, using a different mapping of pins to functions, or just using different GPIO pins for example.

For the record, I've just been comparing main firmware versions 65.08 and 64.62. I'm 99% sure that these are Axpert Max II and Axpert Max E firmwares respectively. The major difference as far as main firmware is concerned seems to be that the II models devolve the LED processing to the display processor. The E models with the removable display can't do that, as the display can't connect to the LEDs (there isn't enough wiring available). This makes it impractical to convert II firmware to E firmware or vice versa, plus there may be other differences, even for users who don't care about the LED control.

 

Hi. Now i have the firmware for 11k twin 28066, can u check and modify it ? Thanks.

MAXE11K_TWIN_DSP_7807.7z

 

how i can flash ?

Try the below. I wrote this some weeks ago, but I can't find it on this forum, so perhaps I forgot to upload it. Sigh.

 

This is patched firmware version 964.62. ...

Deleted as it is now obsoleted by the above. I was literally 10 minutes late... sigh.

Edited September 11, 20232 yr by Coulomb

 

Now i have the firmware for 11k twin 28066, can u check and modify it ?

Wow. I had just posted a hacked 64.62 for you to try. Thanks for the 78.xx firmware; it's the first I've seen.

I will check soon; I have errands to run now. Checking '28066 firmwares is harder for technical reasons.

I'll try and patch it soonish, but work is piling up at present.

 

Wow. I had just posted a hacked 64.62 for you to try. Thanks for the 78.xx firmware; it's the first I've seen.

I will check soon; I have errands to run now. Checking '28066 firmwares is harder for technical reasons.

I'll try and patch it soonish, but work is piling up at present.

I would like if u can check rhe 78.xx and patch it....it will work i think

On 2023/09/11 at 7:58 PM, add1c7ed55 said:

I would like if u can check the 78.xx and patch it....

This firmware update (with version 78.07) is indeed Axpert MAX E 11kW Twin '28066 main firmware; it should work for your inverter.

The MPPT algorithm is identical to one I've seen before, e.g. in 91.04, but it's one that I think stands a chance of working as is, because it doesn't have the "race to the bottom" code, rather "stay where we are" code. So I think it's worth trying; I won't have time to patch this code for several days unfortunately.

Edited October 14, 20232 yr by Coulomb

 

Această actualizare de firmware este într-adevăr firmware-ul principal Axpert MAX E 11kW Twin '28066; ar trebui să funcționeze pentru invertorul dvs.

Algoritmul MPPT este identic cu cel pe care l-am văzut înainte, de exemplu în 91.04, dar este unul care crede că are șanse să funcționeze așa cum, deoarece nu sunt codul „cursă până la capăt”, mai degrabă „stai unde suntem. " cod. Deci cred că merită încercat; Nu voi avea timp să corecteze acest cod timp de câteva zile, din păcate.

This i have now, with it comes the machine from China. But i take it from suppliet to give u to check....its good, but in the morning has a little lag, the voltage grows only when have more than 2A on mppt. Can u patch Something to be better ?

 

This firmware update is indeed Axpert MAX E 11kW Twin '28066 main firmware; it should work for your inverter.

The MPPT algorithm is identical to one I've seen before, e.g. in 91.04, but it's one that I think stands a chance of working as is, because it doesn't have the "race to the bottom" code, rather "stay where we are" code. So I think it's worth trying; I won't have time to patch this code for several days unfortunately.

Hi. Sorry for stressing u. Do u think have some time to modify the 78.xx for max 11k twin this days? Here is bad weather and works bad... thanks 

 

Hi. Sorry for stressing u. Do u think have some time to modify the 78.xx for max 11k twin this days? Here is bad weather and works bad... thanks 

I think you need to be more patient, he’s doing this on his own time for free so you cannot keep asking every few days

Hello you can try this :

 

 

I have the following problem with Axpert Max 2 11kw Twin:
Sometimes the battery charge does not exceed 90A even though the setting is 150A.
This poses a problem when the day is cloudy, because during clearing the charge is not maximum, so there is "lost" energy.
Do you have this problem with yours?

Sometimes by playing with the AC load for example by activating the water heater then turning it off or other consumer devices this clears the blockage at 90 amps

This is what I did in the example below

where can we find Voltronics firmware ?

Any help is welcome

 

where can we find Voltronics firmware ?

Since the advent of the clones, there is no official firmware site.

Edited April 15, 20251 yr by Coulomb

Thanks for your help.
Yes I've seen all the different versions... I don't have too many complaints about how it works, and I don't want/can't crash it so for now I'll stick with the original firmware, but since this weekend I added 2 solar panels, I went from 2x11 in series to 2x12 on the mppt 2 input, the nominal voltage is now around 360-400 V and since then the battery charge no longer exceeds 90 amps even in full sun, whereas with 11 panels I went up to 150A without difficulty... Am I too close to the maximum (500V)? I searched but I don't understand.

Thank you for the link

an idea ?
THANKS

11s :

12s :

Apparently 12 panels in series are too many for this inverter, despite the mppt which is given up to 450vdc. Already at 360Vdc, a recharge limitation occurs (max 90A instead of 150A).
I don't know if this is a "firmware bug" limitation or a real hardware limitation to prevent damage.

I don't understand why this happens, so I don't know how to avoid this problem except by changing the photovoltaic field from 2px12s to 3px8s.

Does anyone have a limitation of this kind on Voltronics equipment, when used in High Voltage mppt and high charging current?