Do you have a cigarette lighter? You can get one of those lighter to USB power adapters then use your USB for a flash drive.That upgrade didn't work on my 21 Trail Boss Custom. I was hoping to utilize the SD card to keep songs on as I have an AAWireless module plugged into the USB-A port so I have wireless Android Auto all the time. I keep the USB-C open for charging or plugging in my phone on long trips. The SD card wasn't recognized.
That won't work because the AAWireless module uses the USB to communicate with the head unit. I could use a USB-C flash drive if I wanted to, but it's not really worth it since I listen to Sirus-XM all the time.Do you have a cigarette lighter? You can get one of those lighter to USB power adapters then use your USB for a flash drive.