While I could successfully update the mini to v4.1.4, both of my mk2s fail to update. It doesn’t matter if I try updating via the web updater or the file updater, the result is always the same: after the firmware file has been placed on the SD card and the device starts to install the new firmware, the progress bar draws a single pixel row at the beginning and then never progresses beyond that within 20 minutes. Any idea?