Guys Thanks for the new Firmware and Apps, very much appreciated. I'm trying to flash the latest firmware 1.3.0 onto my collection of AudioMoths using the new 1.0.1 flash app. This works fine under win10 but under Linux Mint, I get an error saying unable to open port:-( The flash app runs and downloads the firmware, but when I click the Flash AudioMoth I get the following: The configuration app works under Linux, so I feel this is an issue with the flash app. If it helps here are various bits of config and debug information: ==================== cat /lib/udev/rules.d/99-audiomoth.rules SUBSYSTEM=="usb", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="0002", MODE="0666" SUBSYSTEM=="tty", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="0003", MODE="0666" ls -alt /lib/udev/rules.d/99-audiomoth.rules -rw-r--r-- 1 root root 162 Mar 16 08:01 /lib/udev/rules.d/99-audiomoth.rules ===================== dmesg when AudioMoth first plugged in: [79972.344380] usb 2-1.1: new full-speed USB device number 9 using ehci-pci [79972.455000] usb 2-1.1: New USB device found, idVendor=10c4, idProduct=0002, bcdDevice= 0.00 [79972.455002] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [79972.455003] usb 2-1.1: Product: AudioMoth [79972.455004] usb 2-1.1: Manufacturer: openacousticdevices.info [79972.455005] usb 2-1.1: SerialNumber: 0100 [79972.456371] hid-generic 0003:10C4:0002.0007: hiddev1,hidraw3: USB HID v1.11 Device [openacousticdevices.info AudioMoth] on usb-0000:00:1d.0-1.1/input0 dmesg when switched from USB/OFF to CUSTOM [80040.217515] usb 2-1.1: USB disconnect, device number 9 dmesg after paper clip used to set to bootloader mode [80102.392227] usb 2-1.1: new full-speed USB device number 10 using ehci-pci [80102.503464] usb 2-1.1: New USB device found, idVendor=2544, idProduct=0003, bcdDevice= 0.00 [80102.503469] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [80102.503471] usb 2-1.1: Product: EFM32 USB CDC serial port device [80102.503474] usb 2-1.1: Manufacturer: Energy Micro AS [80102.504477] cdc_acm 2-1.1:1.0: ttyACM0: USB ACM device ==================== extract from /var/log/syslog Mar 26 12:08:28 TP-X230 mtp-probe: checking bus 2, device 10: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1" Mar 26 12:08:28 TP-X230 mtp-probe: bus: 2, device: 10 was not an MTP device Mar 26 12:08:28 TP-X230 upowerd[1202]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.1 Mar 26 12:08:28 TP-X230 upowerd[1202]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0 Mar 26 12:08:28 TP-X230 upowerd[1202]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1 ==================== If there's any other logs that you need to see please let me know. It's not urgent to fix this as I can use Win10 to finish the updates. It's likely that I'm doing something stupid which is causing this but I would like to know if it's a problem with me, my machine or if a more general fix is required. Many thanks EAP