Hello I am having trouble with my Arduino Uno Wifi Rev2, I have installed the Arduino megaAVR Boards from the board manager inside the Arduino IDE, but no driver was installed, the device manager shows arduino as ATm32U4DFU. Also the "L" Led never blinks. I am guessing my Arduino is broken, I saw various post about the same. Did someone found a solution?
I also bought a MKR 1000 and it did work flowless, I even connect the thing to unreal engine haha,
Welome.
Did the board ever work? If not, send it back to the supplier. If yes, what did you do to the poor thing?
To my knowledge that would indicate that the TTL-to-USB converter was not programmed or is permanently in program mode (maybe a short on the board).
That would indicate that the main processor was not programmed with the blink sketch in the factory; bootloader is probably also not programmed.
@karmakun
What shields or modules might you have connected to the board? Try removing anything that you've added, as @sterretje said, could be a short. Possibly on any shields or modules? I'm not sure if it would show up at all if it's shorted out, but it's worth a try anyway. I once shorted a board out while it was connected to my PC, and it just shut the USB port off.
From what I have learnt, the DFU is a kind of programming mode that you can set.
Well, that is actually encouraging. It strongly suggests the bootloader is okay. Edit - okay no, just on the serial-USB chip as mentioned earlier.
Hey sterretje thanks for the quick response
I am speaking about a brand new board, I got it a day ago. Never worked. I tried installing every version of the megaAVR Lol, Regarding to the bootloader, I tried resetting multiple times, nothing, I never got to install a simple sketch. At this point I am contacting my seller, I think the board is just jammed.
Hmm interesting, sorry my ignorance I have a lot of programming experience, but never tried arduino before, what does that mean exactly? how that indicates the bootloader is ok?
Btw I bought 3 arduinos, this one the only one that did not work, the another one was a MKR and a Leonardo.
Mistake on my part. Ignore... however it does indicate that the board is at least "alive". But it's likely the main processor is borked for some reason...
My best guess is that the firmware for the ATm32u4 on the "Arduino UNO WiFi V2" is:
packages/Arduino/hardware/megaavr/1.8.7/firmwares/MuxTO/MuxTO.hex
I think the FLIP program from Microchip will do DFU (Direct Firmware Update), installing firmware over USB:
https://www.microchip.com/en-us/development-tool/flip
Hey this is new info,
I read you need to set the DFU mode, but it seems the instructions said not for the Wifi rev2, (bad luck) https://support.arduino.cc/hc/en-us/articles/4410804625682-Set-a-board-to-DFU-mode
I kept digging in this topic, I found out these instructions https://docs.arduino.cc/tutorials/uno-wifi-rev2/uno-wifi-r2-chromebook-installation#windows, it explains how to use the uno wifi rev2 on a chrome book, that I don't care bit, but it has a tool to upgrade the firmware first, which is required for the chormebook, unfurtunately this tool works over the assumption that the board is connected to USB and it was working correctly beforehand haha, so java is giving me this error:
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