AURT flashing stick got delivered today so i tried it with my little knowledge.
I connected 5V to the only unlabeled pin.
At first I got errors but, rather quickly, I figured out I needed to put it in “formatting” mode.
Didn’t know if IO0 had to be pulled high or low for this but a brief Google search got me the answer.
Using my breadboard to extract GND to multiple points it worked like a charm.
Remote flashed succesfull and the only thing I had to update was the MAC address in WLED settings.
Chris, I have the same remote and same issue. What program did you use and how to put it format mode for example. I would help if you have some more info so I can flash it also.
IO0 needs to be pulled down, connect to GND to get it in format mode.
I think I used ESPHome to flash.
You do need UART flashing stick and a small breadboard helps to split the GND pin.
Good luck!