Blueduino stopped working while Firmware upgrade


I was trying to upgrade blueduino firmware to zero keyboard. while doing it from UART it shows semaphore timeout and after wards blueduino is not replying to any AT commands . I am sure we were not able to upgrade blueduino but now we are unable to use it . please suggest !!

Please see this wiki. Which step stop you to upgrading?

  • do you power BlueDuino by the micro usb cable. this is needed when upgrading.
  • please take a screenshot for the serialBootTool