The windows gui firmware updater didn’t work for me. I updated the bootloader then the firmware to v2.5. Both showed success, but no luck on getting any serial output from the openlog. I had success using the arduino ide and compiling the v2.5 source code. The openlog Artemis works again. However, even using v2.5 it’s not recognizing the kx134. I tried the kx134 example program using an arduino uno, and it failed to recognize it. I suspect I have a bad kx134 board.