This is an all-in-one UPDI programmer with a USB-C port. It can be used to update firmware on flashlights with the 3-pin programming pads such as the Wurkkos TS10 and Sofirn SP10 Pro. You can use either a USB-C to USB-C or USB-A to USB-C cable. Flashing can be performed using AVRDUDE 7 on a computer (use the SerialUPDI programmer option) or by using the ZFlasher AVR app for Android devices. This is an implementation of Serial UPDI communication using a CH340 USB to Serial circuit.
