ESP32 Forum

Hello All:
Wondering why my code loads the very first time thru the USB OTG port, but then after it is loaded, windows device manager and arduino can not see it. I have verified this by replacing three modules now, with identical results. I have tried setting USB_SEL (GPIO18) both HI and LOW, same results... I also try bringing BOOT (GPIO0) low after reset. I'm guessing it has to be something in my USB driver code?
Thank you for any and all assistance

Not sure where you get USB_SEL from, in hardware and the bootloader GPIO18 doesn't have any specific function. In general, you should always be able to upload new code when you force-boot into download mode (GPIO0 and GPIO46 low while the chip comes out of reset).