Thanks for your support. I tried adafruit bootloader for feather and the official hex file, featherm0bootloader_160305.hex and flashed by the jlink programmer. The LED is blinking like heart pulse. However, the USB port is not detected. On windows I am getting "USB port malfunction issue" and on Linux, I am getting the error, "unable to enumerate USB device on port 1". I can confirmed that getting the same issue on multiple boards.
Thanks for your support. I tried adafruit bootloader for feather and the official hex file, featherm0bootloader_160305.hex and flashed by the jlink programmer. The LED is blinking like heart pulse. However, the USB port is not detected. On windows I am getting "USB port malfunction issue" and on Linux, I am getting the error, "unable to enumerate USB device on port 1". I can confirmed that getting the same issue on multiple boards.
I also checked this issue, https://github.com/arduino/ArduinoCore-samd/issues/137 So is there any bug on the Adafruit bootloader?. Any kind of help is appreciated to solve this issue.
TIA, Prakash