High quality wireless communications equipment

openSPOT4 changelog

Changelog for stable firmware versions of the


  • Allow saving DCS/XLX and REF/XRF servers to the Wires-X menu of C4FM transceivers


  • Allow changing to non-numbered DCS/XLX servers using the transceiver’s urcall/destination callsign method
  • Schedule outgoing D-STAR packets in D-STAR modem mode in 20ms interval
  • Fixed YSFReflector server ID length
  • Fixed applying the forced DGID to net C4FM setting
  • Minor fixes and enhancements


  • Added all D-STAR module letters to module selection dropdowns
  • Fixed garbage after ROT1 decoded DAPNET message
  • Fixed RTC wakeup when device is powered off and USB cable plugged in/out
  • Fixed an issue which may cause a bootup problem
  • Minor fixes and enhancements


  • Added option to hide voice announcements from the web interface call log
  • Callsign information is now compatible with newer REF/XRF server dashboards
  • Smaller fixes and enhancements


  • Fix reconnect to Wi-Fi network on IP address acquire timeout


  • Added a “Dst callsign for cross calls” setting to the D-STAR settings. This callsign will be used as the destination callsign for calls to the D-STAR transceiver coming from the network.
  • Added a “Cross mode destination DMR ID” setting to the DMR settings. In case a DMR network is connected in a non-DMR modem mode, and the “Use cross mode destination DMR ID” checkbox is checked, then calls to the DMR network will be sent to the DMR ID specified at the “Cross mode destination DMR ID” field, except when using the Homebrew/MMDVM connector (it has a “Route cross mode calls to ID” field, and it will always be used).
  • RSSI data is now sent to the Homebrew/MMDVM server in cross mode operation.
  • Fixed sending empty dst/src callsigns to the server on C4FM call end
  • Various smaller fixes


  • Fixed entering raw Homebrew/MMDVM options
  • Fixed occasional reboot on SMS send/receive
  • Various smaller fixes


  • Fixed occasional lockup when the DAPNET connector is active


  • Fixed occasional lockup on connector disconnecting/reconnecting
  • Fixed sending calls to SharkRF IP Connector server/client when using the SharkRF Link app
  • Fixed: voice announcement is not played when switching to the Null connector using an unlink transceiver command
  • Fixed setting the “Route cross mode calls to ID” when a quick call is requested to IDs between 4000 and 5000 with a group call
  • Various smaller fixes and improvements


  • Fixed RSSI measurement
  • Fixed max. server/password field lengths on the web interface
  • Fixed hostname error when it is longer than 32
  • Fixed max. Wi-Fi key length on the web interface
  • Fixed timestamps in the exported call log
  • Fixed reboot when an unconfirmed APRS message is received
  • Various smaller fixes and improvements


  • Fixed: some servers could only be connected after a reboot
  • Various smaller fixes and improvements


  • Fixed sending D-STAR callsign suffix using cross modes on DCS/XLX servers


  • Added support for the new SharkRF Link app. This app lets you easily open the web interface of your SharkRF devices, and also use the app as a transceiver. See this page for more information.
  • Added power off if no charger connected delay
  • Added support for setting source callsign suffix for D-STAR cross mode calls and when using the SharkRF Link app
  • Added support for disabling talkgroup list usage
  • Updated the BrandMeister Manager to the latest BrandMeister API auth change
  • Added support for exporting all config profiles at once
  • Homebrew/MMDVM connector in C4FM or D-STAR cross mode: if a Special command/cross mode private call DTMF code (default *) is sent to the openSPOT4 without an ID, then a quick group call to ID 4000 will be sent. If the cross mode group call DTMF code (default #) is sent without an ID appended to the command character, then the destination ID of the last incoming call from the network will be set as the “Route cross mode calls to ID” setting. For example, if the “Route cross mode calls to ID” setting is currently TG123, and a call is received to TG91, and you enter DTMF code # to the openSPOT4, then the “Route cross mode calls to ID” setting will be changed to TG91. This can be used to quickly answer an incoming call to a talkgroup
  • Fixed occasions when active profile overwrote the new profile after profile change
  • Fixed croaking sound when there are invalid seqnum errors/missing packets in the incoming C4FM network stream
  • Fixed profile #10 voice announcement
  • Various fixes and improvements


  • Added profile change with buttons. Keep the Wi-Fi button pressed while pressing the Power button as many times as the number of the configuration profile you want to switch to. The status LED will start blinking white rapidly after the first Power button press, signaling the upcoming profile switch. If the Power button press count is more than the number of available configuration profiles, the switch gets canceled.
  • Display the previous call log entries when loading the web interface
  • Added TCP keepalive support to be able to detect broken DAPNET/APRS connections
  • Added v2 API key support to the BrandMeister Manager on the web interface (note that v2 keys are stored in the browser, not in the device)
  • Fixed LED state change after enabling/disabling AP mode


  • Now the openSPOT4 connects to the next configured Wi-Fi network if no internet access is detected, this behavior can be disabled on the Network page, Wireless settings section (enabled by default)
  • Allow using the 192.168.99.x subnet in Wi-Fi client mode
  • Reduce output jitter during transcoding as a workaround for receive issues on devices which don’t have a proper dejitter queue implementation (MMDVM)
  • Various smaller fixes and improvements


  • Added handling more DCS/XLX module letters in D-STAR DTMF commands
  • Do not power off if “turn off if no charge” is enabled, but the device is powered on with the button
  • Added P25 ID/talkgroup resolving to callsigns/names on the web interface
  • Fixed the battery charge low voice announcement: it won’t be played when it’s disabled
  • Fixed the DMR ID registration link in the Quick Setup
  • Fixed hang when an UDP/Chinese DMR SMS message can’t be sent
  • Various smaller fixes and improvements


  • Further fixes in APRS, DAPNET data handling


  • Fixes in APRS data handling


  • Fixed: data packets with password sent to SharkRF IP Connector were not processed by the server
  • Added missing profile switch descriptions for the Pro version
  • Added option to disable C4FM downlink callsign send to modem


  • Fixed BrandMeister server announcements
  • Fixed modem TX power and hostname setting apply on save
  • Fixed Homebrew/MMDVM config send to server


  • Fixed: receiving a P25 call from the modem blocked the web interface
  • Fixed: CWID enable setting ignored


  • Fixed: P25 TG ID display and voice announcement
  • Fixed: stuttering C4FM disconnect voice announcements
  • Added padding to srf-ip-conn callsigns with spaces
  • Fixed: reversed TX/RX traffic counters


  • Fixed occasional hang on control calls


  • Improved accuracy of battery charge/discharge remaining estimates
  • Fixed FCS server Wires-X button server ID


  • Various fixes and improvements


  • Initial release