Arduino uno r4 wifi bootloop

i was updating the firmware on device to get better wifi connectivity and confirm the update happened the first time i tried, but i accidentally put it on the ISCP ground and the one just above it on the 3 pin side.

the firmware uploaded but now the device goes into a bootloop or starts up then shuts down. nothing i do will reset it to a functional state, am i screwed?

If you double tap reset do you still get a slowly blinking L led?

negative, it has gotten worse since posting that. i tried to reflash the firmware thinking it might have screwed up somehow and even with the 2 pins grounded out the usb connects for 10 seconds then disconnects so i cant even reflash

What directions are you following?

used that to update it, i used the powershell, the audrino ide firmware update failed

from what i can see when i plug it in now. the power light turns on. the RX light turns on solid, then the usb connection drops. if it does stay long enough and i try to run the flash it will sometimes get to 80%ish and the serial connection drops and the arduino usb connection drops and the device restarts.

so im assuming its all screwed up now and i just need to get a new one

Try this just for kicks. Plug in the USB, then hit reset one time and then start the flash. I've had the flash fail like this and that was the fix in my case.

I had the same output as you except for the port number.

it doesnt show up as a device to select in the list. after a few second after plugging in the usb cable the device disconnects from the pc

Which list? If you're trying to use the IDE then it won't work if the firmware is already torched. You'll have to use the direct method. Once you get the old firmware loaded the direct way then you can go back into the IDE and upload the newer version.

The fact that a double tap doesn't get you into the RA4M1 bootloader is concerning though. Even if the ESP firmware is gone the RA4M1 should still be there.

Oh and make sure you don't have an Arduino window open with the serial monitor open. That will stop it too.

ya, i restarted my pc, tried it on a linux box, it is all dead i think. ill ask for a replacement but i doubt i get it. thanks for the help troubleshooting.

ill have to order a new one and try not to make the same mistakes