February 9, 20215 yr Looking at https://www.ostrovni-elektrarny.cz/support/Axpert/FW/ for recent firmware I see that the revision number for the VMIII is listed as 91.20 which is very different to the 41.16 firmware file above. Does anyone have an explanation for this?
February 9, 20215 yr On 2021/02/09 at 8:25 PM, Shadders said: I see that the revision number for the VMIII is listed as 91.20 which is very different to the 41.16 firmware file above. Who knows the mind of the Voltronic engineers? There seems to be three major version numbers for VM III firmware: 20.XX, 41.XX and 91.XX. I think 91.XX was a major change to unite some models, e.g. 1500/3000/5000 W models. 20.XX was even older, I don't know why the change from 20.XX to 41.XX. Edit: it is stated by another poster elsewhere that the 90.xx files are experimental in some way, and the 45.xx are the "official" "release quality" versions. Edited June 17, 20215 yr by Coulomb
February 9, 20215 yr 3 hours ago, Coulomb said: Who knows the mind of the Voltronic engineers? ROFL Thanks for the reply, I was concerned I had missed a trick and completely misidentified the model I wanted to update.
February 22, 20215 yr On 2020/12/26 at 4:27 PM, Romuald said: First of all, Merry Chistmas to all of you! I have been waiting for the firmware upgrade for my inverter for a very long time. Thanks to your upload, I was finally able to use it. My inverter is a ISolar SMV III 5KW. It is basically a clone of the Axpert VM III 5000-48. My previous firmware was U1 41.15 U2 02.40 After the upgrade, this is the new version: U1 41.16 U2 02.61 The issues with the fan speed are resolved. Thank you very much! Hello, I also tought to get this model. Becouse I can't find a reliable reseller in Europa for the Axpert VM III. But some Details are different: - Axpert VM III with max PV 5000W / 100A Charger? https://voltronicpower.com/en-US/Product/Detail/Axpert-VM-III-1.5KVA-3KVA-5KVA - ISolar SMV III 5KW only with max PV 4000W / 80A http://www.easunpower.com/Products/Off-Grid/Bluetooth_Solar_Inverter/77.html I thought they are similar. Any advice? First I thought to get a MPP Solar 5048 MGX, but also hard to source. I prefere to have 5000W PV Input. In fact I thought to buy an MPPSolar 5048MGX. But it's hard to get Europa.
June 17, 20215 yr On 2020/12/23 at 10:15 PM, Henry2501 said: For anyone interested. I am not sure if i am allowed to do this but i finally got firmware from the actual factory in Taiwan that manufactures my specific unit. Its the VMiii 5kv unit with 48volt battery (I also have a Pylontech 3000 battery connected to it with no communication issues. ) I had constant issues with unit resetting stored settings and fan always on issues. I got the latest firmware from the factory for the Display unit and the Main CPU firmware. They were very professional and quick to assist me after the local Company did not do much to assist, they did eventually respond but still did not give me the correct info. After updating both the Main Firmware and the Display firmware my unit is way more stable and quieter. No fans running 24/7. I upgraded from 41.03 to 41.16 main cpu and 2.00 to 2.61 on the remote Display CPU and it is way more stable. This might not be the latest i don't know but it seems stable. Was super easy to do. Hope this can help someone that is struggling. Please note this firmware is for the VMiii 5kv Offgrid inverter with the Screen on the bottom left side of the Inverter box see image attached i believe the same as the kodak inverters. I accept no responsibility for you bricking your inverter, this is used at your own risk. If i can do it i am sure you can. Remote Panel Firmware Upgrade SOP20190819.pdf 478.07 kB · 83 downloads Remote Panel_Reflash_MCU(02.61).rar 856.14 kB · 81 downloads VMIII reflash_ver41.16.7z 1.13 MB · 67 downloads Thanks for sharing the firmware, i am facing the firmware installation. I load the reflsh tool as provided in above zip file, and slect the communication port which is USB in my case and then upload the .hex file i have deliberately changed its name from vm3.hex to dsp.hex, and then click on "update firmware" after some time the blue bar as shown in below picture jumps down from top to the point where it gives error, nothing is written on blue bar it just gets one step down after every second, nothing is shown in progress bar. I have tried from RS232 cable and then tried from OTG( On-the-Go) through usb, but it seems nothing is working. while upgrade f remote panel reflash worked fine, it took almost ten minutes for the installtaion to complete but reflashing of main firmware is showing up error as shown in below image. Earlier i had 41.01 version of firmware isntalled which got corrupted. Please help me how to install the firmware.
June 17, 20215 yr On 2021/02/09 at 3:25 PM, Shadders said: Looking at https://www.ostrovni-elektrarny.cz/support/Axpert/FW/ for recent firmware I see that the revision number for the VMIII is listed as 91.20 which is very different to the 41.16 firmware file above. Does anyone have an explanation for this? Thanks for sharing the website link. My VMIII 5KW inverter is showing up an error code 32, i have tried to install 41.16 version as shared by Henry, but i am getting an error saying "firmware update check ready error" should i try with 91.20 version of firmware? is this compatible with VMIII 5KW as i have attached picture of my inverter in above message. please advise how to resolve this issue.
June 17, 20215 yr 5 minutes ago, Tariq Bugti said: My VMIII 5KW inverter is showing up an error code 32, i have tried to install 41.16 version as shared by Henry, but i am getting an error saying "firmware update check ready error" Is that using the USB stick method? If so, perhaps try the PC method? You will need a compatible USB to serial adapter, and a Windows PC.
June 17, 20215 yr 2 minutes ago, Coulomb said: Is that using the USB stick method? If so, perhaps try the PC method? You will need a compatible USB to serial adapter, and a Windows PC. Thank you for your prompt reponse. I have tried both using USB stick method and RS232 serial port method using a windows 7 installed PC, but the installation gives an error every time, though the remote panel reflash software got installed 100% with no errors but main firmware is giving error. What do you think might be causing it?Should i try 91.20 version firmware and is it compatilbe? Can you suggest a solution?
June 17, 20215 yr Oops, I see that you posted photos of both methods already. My bad. Trying to get through a lot of messages quickly. 31 minutes ago, Tariq Bugti said: Should i try 91.20 version firmware and is it compatible? Fault code 32 is a failure of communication between the removable display and the main DSP inside the inverter. So trying different firmware is most unlikely to work. Your inverter does seem to be a genuine one, at least from the photos. Is there a date sticker over a screw near the large sticker with the bar-code? If it's a clone, those messages suggest to me that perhaps the inverter doesn't have the right bootloader, in particular "Firmware update check ready error". That suggests that the reflash tool sent a command to see if there was a bootloader, and the command was NAKed (bootloader not present). Oh, wait! I see that you are attempting to reflash with dsp.hex. As far as I know, all VM III firmwares are vm3.hex. You seem to be trying to update with King or other firmware. I just checked and 45.16 definitely has vm3.hex. Unless this is a bug in the reflash tool... I'm vaguely remembering such a thing. [ Edit: Nope. I just checked it, and it showed as .hex. You should be using the UPSReflashTool. ] Please confirm that you definitely have the correct firmware update file, and are running the reflash tool that resides inside the folder that archive extracts to. Edited June 17, 20215 yr by Coulomb
June 17, 20215 yr 17 minutes ago, Tariq Bugti said: Thank you for your prompt reponse. Due to the 8 hour time difference, you were just very lucky 🙂
June 17, 20215 yr 5 minutes ago, Coulomb said: Oops, I see that you posted photos of both methods already. My bad. Trying to get through a lot of messages quickly. Fault code 32 is a failure of communication between the removable display and the main DSP inside the inverter. So trying different firmware is most unlikely to work. Your inverter does seem to be a genuine one, at least from the photos. Is there a date sticker over a screw near the large sticker with the bar-code? If it's a clone, those messages suggest to me that perhaps the inverter doesn't have the right bootloader, in particular "Firmware update check ready error". That suggests that the reflash tool sent a command to see if there was a bootloader, and the command was NAKed (bootloader not present). Oh, wait! I see that you are attempting to reflash with dsp.hex. As far as I know, all VM III firmwares are vm3.hex. You seem to be trying to update with King or other firmware. I just checked and 45.16 definitely has vm3.hex. Unless this is a bug in the reflash tool... I'm vaguely remembering such a thing. Please confirm that you definitely have the correct firmware update file, and are running the reflash tool that resides inside the folder that archive extracts to. Yes my inverter is made by Voltronic power and is being sold by brand name OneX in my country. Yes there was a sticker over the screw near large sticker it mentioned 06/2019. If the inverter doesn't have the right bootloader then how come it installed another .hex file for display remote panel firmware which got installed 100% after installation the display screen restarted. I think i suggests the inverter has its bootlaoder working, what do you think? You have rightly pointed out the updating with dsp.hex file, i have deliberately changed the file name from vm3.hex to dsp.hex, while the file remains tha same as inside the archive folder has it. I have downloaded it from the website (https://www.ostrovni-elektrarny.cz/support/Axpert/FW/) you had uploaded. But the error remains as it is even after several attempts. Can't figure out why its happening. I have searched through internet couldn't find anything. Found this thread to be useful, hoping for a solution to come up by you guys. This thread was really helpful and thanks for taking out time and helping out people.
June 17, 20215 yr 6 minutes ago, Tariq Bugti said: You have rightly pointed out the updating with dsp.hex file, i have deliberately changed the file name from vm3.hex to dsp.hex, ? What do you hope to achieve by that? It only confuses things, and makes it possible to do goofy things like uploading a King firmware into a VM3 machine. That's not going to end well.
June 17, 20215 yr 11 minutes ago, Tariq Bugti said: If the inverter doesn't have the right bootloader then how come it installed another .hex file for display remote panel firmware which got installed 100% after installation the display screen restarted I forgot to answer that question. Because the removable display can update its own firmware without the intervention of the DSP and its bootloader; the removable display has its own bootloader (I presume, I've not bothered to find it). Are you going to illuminate me with the reason for renaming the vm3.hex file? I like to learn 🙂
June 17, 20215 yr 3 minutes ago, Coulomb said: ? What do you hope to achieve by that? It only confuses things, and makes it possible to do goofy things like uploading a King firmware into a VM3 machine. That's not going to end well. I had tried vm3.hex several times it didn't work then i changed the name just to see if it changed anything. Chaning the name didn't make any difference both the times same error was poping up. I don't think that changing file name from vm3 to dsp would cause any change in hex file it self or make it king firmware.
June 17, 20215 yr 3 minutes ago, Coulomb said: I forgot to answer that question. Because the removable display can update its own firmware without the intervention of the DSP and its bootloader; the removable display has its own bootloader (I presume, I've not bothered to find it). Are you going to illuminate me with the reason for renaming the vm3.hex file? I like to learn 🙂 So you think its the DSP/main board bootloader which isn't working. Then what do you propose for a solution? I have answered the renaming file in my previous message it had no technical basis, just an intuition based attempt.
June 17, 20215 yr Just a note that we recently flashed some trial software from Voltronics for the king and we were getting error 32 as well. The feedback from the factory was that we had to have solar panels connected because the software changes affect the SCC/MPPT control. So maybe try flashing with solar panels connected in case this is a similar problem?
June 17, 20215 yr 5 hours ago, Tariq Bugti said: is this compatible with VMIII 5KW as i have attached picture of my inverter in above message Oh and I can confirm that I have flashed 91.20 software onto my VMIII with no problems.
June 17, 20215 yr 18 minutes ago, Shadders said: Just a note that we recently flashed some trial software from Voltronics for the king and we were getting error 32 as well. The feedback from the factory was that we had to have solar panels connected because the software changes affect the SCC/MPPT control. So maybe try flashing with solar panels connected in case this is a similar problem? Thank you for your response. I have been trying to update the firmware with standard procedure as describe inside the firmware file folder i.e. connecting just mains, no battery or solar connection. Do you suggest to connect solar panels while doing firmware installation? Did that trial software installation was successful with solar panels connection? My problem is elaborated in above messages where firmare installation doesn't start/ complete. Please go through my earlier messages to correlate if my issue is similar to what you are referring to as in case of king model. Will be waiting for your assistance in this regard. Thanks
June 18, 20215 yr 10 hours ago, Tariq Bugti said: So you think its the DSP/main board bootloader which isn't working. Then what do you propose for a solution? It's a pretty wild guess. If that is the problem, the solution is very complex, unless you get a new control board. My guess is also unlikely to be right if you are confident that the inverter is genuine.
June 18, 20215 yr 6 hours ago, Coulomb said: It's a pretty wild guess. If that is the problem, the solution is very complex, unless you get a new control board. My guess is also unlikely to be right if you are confident that the inverter is genuine. here is latest on the topic, i have succeeded to install vm3 firmware on my inverter. This is how i did it. Replaced my complete LCD panel with another one from a friend who has the exact model inverter as mine. Upon clicking to update the firmware it started installation, and after ten minutes the installation completed, inverter restarted and all parameters came back. inverter became functional. After installlation of firmware i installed back my own LCD panel, and it again showed up fault 32. Now that inverter starts up given 230 volts on its output as measured from voltmeter externally, fans / relays are working. i have also installed firmware for remote panel display mcu, the installation gets complete but same error 32 pops up. I detached the detachable lcd of my inverter and installed it on my friend's inverter the lcd itself is working fine, then upon further disassembling i found out there is another pcb card where two wires coming from inverted get terminated. There is something wrong with that card, though visually it looks fin What do you suggest after current situation? @Coulomb @ShaddersPlease share your feedback
June 18, 20215 yr 20 hours ago, Coulomb said: I forgot to answer that question. Because the removable display can update its own firmware without the intervention of the DSP and its bootloader; the removable display has its own bootloader (I presume, I've not bothered to find it). Are you going to illuminate me with the reason for renaming the vm3.hex file? I like to learn 🙂 So you think its the DSP/main board bootloader which isn't working. Then what do you propose for a solution? I have answered the renaming file in my previous message it had no technical basis, just an intuition based attempt. Finally diagnosed the root cause of the problem, the communciatin card on removable display panel where two cables coming from motherboard is messing up / faulty. I have changed this card with another one from a friend's inverter after which my inverter started working flawlessly. I am posting the picture below. Is this repairable? Which component might have stopped working? there isn't much on it just a transformer, capacitors, smd resistors etc.
June 18, 20215 yr 2 hours ago, Tariq Bugti said: I have changed this card with another one from a friend's inverter after which my inverter started working flawlessly. But didn't the successful main firmware update happen through this "faulty" comms isolating board? Maybe it's just marginal, working only with certain removable displays. The most likely components to become marginal in my opinion are the two opto isolators, the two largest 4-pin components under the board. These can be ordered from Mouser or the like; shipping will likely cost 10x the cost of one part. I found a post where a reader replaced optos on a communications board and it fixed a similar problem (note: the Axpert MKS models have a very different comms board, which you can apparently buy from Mustek, but which probably uses the same opto isolators). I can't quickly find the part number for replacement optos; I'm pretty sure I posted it somewhere, probably in the repair and modifications topic.
June 18, 20215 yr 29 minutes ago, Coulomb said: But didn't the successful main firmware update happen through this "faulty" comms isolating board? Maybe it's just marginal, working only with certain removable displays. The most likely components to become marginal in my opinion are the two opto isolators, the two largest 4-pin components under the board. These can be ordered from Mouser or the like; shipping will likely cost 10x the cost of one part. I found a post where a reader replaced optos on a communications board and it fixed a similar problem (note: the Axpert MKS models have a very different comms board, which you can apparently buy from Mustek, but which probably uses the same opto isolators). I can't quickly find the part number for replacement optos; I'm pretty sure I posted it somewhere, probably in the repair and modifications topic. No the successful main firmware update happened through another display panel(including the isolating board) which was working fine. In my inverter's case the isolating board was the reason my firmware updates were getting failed. Your are right and i am happy to tell you that my issue is resolved, i checked its opto couplers and one of them was faulty, i changed it with a new one and the inverter has come back to life. I did that ealier today, now that you too have shared fixing a similar problem being recified by changing optos. My inverter is working fine now, with both main and display firmwares updated. Thank you very much for your continous replies and help. Hope this thread will help those who are struggling with same issue.
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