I have CHR-UM6 which connects to PC’s USB port via CP2102 USB to serial adapter. I don’t have serial breakout board.
If I need to reprogram firmware, can i do it using “Reprogram Firmware” button in “Serial settings” tab in CHR software v2.1.0 without serial breakout board? or is a serial breakout board required for this?
It looks like it. The CHR-UM6 has a serial bootloader on it. It enters bootloader mode if BOOT0 is high at power-on. The firmware repogramming guide on the CHR forum describes what might be an old way of doing it. If you want to be completely sure that you can use the CHRobotics Serial Interface, you can ask on the CHR forum.