Cannot change Ping1D firmware

Please see the GUI log pasted below (apologies - I am not allowed to upload files as a new user). Seems like an issue with the current firmware? Do I need to flash the sensor as described here?

$ grep -vE '""|Handling Message|Requesting' 20191101-100517728.txt
[10:05:20:414] ping.settingsmanager[Debug]: "Load darkTheme with:" false
[10:05:20:414] ping.settingsmanager[Debug]: "Load debugMode with:" true
[10:05:20:428] ping.settingsmanager[Debug]: "Load replayMenu with:" false
[10:05:20:429] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:429] ping.settingsmanager[Debug]: "Load logScrollLock with:" true
[10:05:20:429] ping.settingsmanager[Debug]: "Load logScrollLock with:" true
[10:05:20:435] ping.settingsmanager[Debug]: "Load debugMode with:" true
[10:05:20:435] ping.settingsmanager[Debug]: "Load debugMode with:" true
[10:05:20:435] ping.settingsmanager[Debug]: "Load debugMode with:" true
[10:05:20:436] ping.settingsmanager[Debug]: "Load debugMode with:" true
[10:05:20:436] ping.settingsmanager[Debug]: "Load replayMenu with:" false
[10:05:20:436] ping.settingsmanager[Debug]: "Load darkTheme with:" false
[10:05:20:572] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:611] default[Warning]: FirmwareUpdate.qml(18) qrc:/FirmwareUpdate.qml:18:5: QML Connections: Cannot assign to non-existent property "onFlashProgress"
[10:05:20:646] ping.devicemanager[Debug]: Start protocol detector service.
[10:05:20:647] ping.protocol.protocoldetector[Debug]: Probing UDP: "LinkConfiguration{Name: BlueRov2 Ping1D Port, Sensor: UNKNOWN, LinkType: UDP, Arguments: (192.168.2.2:9090)}"
[10:05:20:657] default[Warning]: FirmwareUpdate.qml(19) qrc:/FirmwareUpdate.qml:19: TypeError: Cannot read property 'flasher' of null
[10:05:20:658] default[Warning]: FirmwareUpdate.qml(88) qrc:/FirmwareUpdate.qml:88: TypeError: Cannot read property 'firmware_version_major' of null
[10:05:20:658] default[Warning]: PingStatus.qml(72) qrc:/PingStatus.qml:72: TypeError: Cannot read property 'title' of undefined
[10:05:20:658] default[Warning]: PingStatus.qml(75) qrc:/PingStatus.qml:75: TypeError: Cannot read property 'model' of undefined
[10:05:20:658] default[Warning]: PingStatus.qml(14) qrc:/PingStatus.qml:14: TypeError: Cannot call method 'sensorStatusModel' of null
[10:05:20:658] default[Warning]: MainPage.qml(264) qrc:/MainPage.qml:264: TypeError: Cannot read property 'z' of null
[10:05:20:658] ping.main[Info]: Git version: a1e1cb2
[10:05:20:658] ping.main[Info]: Git version date: 2019-09-24T11:41:18-03:00
[10:05:20:658] ping.main[Info]: Git tag: v2.0.4
[10:05:20:658] ping.main[Info]: Git url: https://github.com/bluerobotics/ping-viewer.git
[10:05:20:670] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:671] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:671] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:672] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:672] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:672] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:673] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:673] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:673] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:674] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:768] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:769] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:769] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:770] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:770] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:771] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:20:771] ping.settingsmanager[Debug]: "Load enabledCategories with:" 0
[10:05:21:697] ping.protocol.protocoldetector[Debug]: UDP socket disconnected.
[10:05:21:697] ping.protocol.protocoldetector[Debug]: Probing UDP: "LinkConfiguration{Name: BlueRov2 Ping360 Port, Sensor: UNKNOWN, LinkType: UDP, Arguments: (192.168.2.2:9092)}"
[10:05:22:748] ping.protocol.protocoldetector[Debug]: UDP socket disconnected.
[10:05:22:748] ping.protocol.protocoldetector[Debug]: Probing UDP: "LinkConfiguration{Name: Development port, Sensor: UNKNOWN, LinkType: UDP, Arguments: (127.0.0.1:1234)}"
[10:05:22:748] ping.protocol.protocoldetector[Debug]: Socket is not in connected state.
[10:05:22:748] ping.protocol.protocoldetector[Debug]: "Error (0): Connection refused."
[10:05:22:748] ping.protocol.protocoldetector[Debug]: UDP socket disconnected.
[10:05:22:803] ping.protocol.protocoldetector[Debug]: Waiting port to open..  0 "tty.HoluxM-1000C-SPPslave"
[10:05:22:857] ping.protocol.protocoldetector[Debug]: Waiting port to open..  1 "tty.HoluxM-1000C-SPPslave"
[10:05:22:910] ping.protocol.protocoldetector[Debug]: Waiting port to open..  2 "tty.HoluxM-1000C-SPPslave"
[10:05:22:964] ping.protocol.protocoldetector[Debug]: Waiting port to open..  3 "tty.HoluxM-1000C-SPPslave"
[10:05:23:017] ping.protocol.protocoldetector[Debug]: Waiting port to open..  4 "tty.HoluxM-1000C-SPPslave"
[10:05:23:069] ping.protocol.protocoldetector[Debug]: Waiting port to open..  5 "tty.HoluxM-1000C-SPPslave"
[10:05:23:119] ping.protocol.protocoldetector[Debug]: Waiting port to open..  6 "tty.HoluxM-1000C-SPPslave"
[10:05:23:174] ping.protocol.protocoldetector[Debug]: Waiting port to open..  7 "tty.HoluxM-1000C-SPPslave"
[10:05:23:225] ping.protocol.protocoldetector[Debug]: Waiting port to open..  8 "tty.HoluxM-1000C-SPPslave"
[10:05:23:280] ping.protocol.protocoldetector[Debug]: Waiting port to open..  9 "tty.HoluxM-1000C-SPPslave"
[10:05:23:280] ping.protocol.protocoldetector[Debug]: Couldn't open port "tty.HoluxM-1000C-SPPslave"
[10:05:23:282] ping.protocol.protocoldetector[Warning]: Fail to open serial port: QSerialPort::PermissionError
[10:05:23:332] ping.protocol.protocoldetector[Debug]: Waiting port to open..  0 "tty.HoluxM-1000C-SPPslave"
[10:05:23:332] ping.protocol.protocoldetector[Debug]: Couldn't open port "tty.HoluxM-1000C-SPPslave"
[10:05:23:385] ping.protocol.protocoldetector[Debug]: Waiting port to open..  0 "tty.usbserial-DM01NJ2Q"
[10:05:23:385] ping.protocol.protocoldetector[Debug]: Probing Serial "tty.usbserial-DM01NJ2Q" 115200
[10:05:23:390] ping.protocol.protocoldetector[Debug]: Port is open
[10:05:23:453] ping.protocol.protocoldetector[Debug]: "BR\x04\x00\x04\x00\x00\x00\x01\x00\x00\x00\x9D\x00"
[10:05:23:453] ping.protocol.protocoldetector[Debug]: Detect new device:
device_type: 1
device_revision: 0
firmware_version_major: 0
firmware_version_minor: 0
firmware_version_patch: 157
[10:05:23:455] ping.protocol.protocoldetector[Debug]: Ping detected on: "LinkConfiguration{Name: Detector serial link, Sensor: Ping1D, LinkType: Serial, Arguments: (tty.usbserial-DM01NJ2Q:115200)}"
[10:05:23:509] ping.protocol.protocoldetector[Debug]: Waiting port to open..  0 "tty.usbserial-DM01NJ2Q"
[10:05:23:509] ping.protocol.protocoldetector[Debug]: Probing Serial "tty.usbserial-DM01NJ2Q" 9600
[10:05:23:514] ping.protocol.protocoldetector[Debug]: Port is open
[10:05:24:081] ping.devicemanager[Debug]: Available devices: QVector("LinkConfiguration{Name: Detector serial link, Sensor: Ping1D, LinkType: Serial, Arguments: (tty.usbserial-DM01NJ2Q:115200)}")
[10:05:24:081] ping.devicemanager[Debug]: Add connection configuration for: "Ping1D" "LinkConfiguration{Name: Detector serial link, Sensor: Ping1D, LinkType: Serial, Arguments: (tty.usbserial-DM01NJ2Q:115200)}"
[10:05:24:575] ping.protocol.protocoldetector[Debug]: Probing UDP: "LinkConfiguration{Name: BlueRov2 Ping1D Port, Sensor: UNKNOWN, LinkType: UDP, Arguments: (192.168.2.2:9090)}"
[10:05:25:050] ping.devicemanager[Debug]: Stop protocol detector service.
[10:05:25:050] ping.devicemanager[Debug]: Connecting with sensor: "Ping1D" "LinkConfiguration{Name: Detector serial link, Sensor: Ping1D, LinkType: Serial, Arguments: (tty.usbserial-DM01NJ2Q:115200)}"
[10:05:25:050] ping.settingsmanager[Debug]: "Load lastLinkConfiguration with:" "LinkConfiguration{Name: Detector serial link, Sensor: Ping1D, LinkType: Serial, Arguments: (tty.usbserial-DM01NJ2Q:115200)}"
[10:05:25:050] ping.protocol.ping[Debug]: Loading last configuration connection from settings: "LinkConfiguration{Name: Detector serial link, Sensor: Ping1D, LinkType: Serial, Arguments: (tty.usbserial-DM01NJ2Q:115200)}"
[10:05:25:059] ping.protocol.protocoldetector[Debug]: UDP socket disconnected.
[10:05:25:060] ping.waterfallGradient[Warning]: Invalid color or name
[10:05:25:060] ping.waterfall[Debug]: Gradients: ("Thermal blue", "Thermal black", "Thermal white", "Monochrome black", "Monochrome white", "Monochrome sepia")
[10:05:25:060] ping.waterfall[Warning]: Not valid theme: "Thermal 5"  in: ("Thermal blue", "Thermal black", "Thermal white", "Monochrome black", "Monochrome white", "Monochrome sepia")
[10:05:25:085] ping.settingsmanager[Debug]: "Load debugMode with:" true
[10:05:25:086] ping.settingsmanager[Debug]: "Load enableSensorAdvancedConfiguration with:" false
[10:05:25:086] ping.settingsmanager[Debug]: "Load enableSensorAdvancedConfiguration with:" false
[10:05:25:086] ping.settingsmanager[Debug]: "Load enableSensorAdvancedConfiguration with:" false
[10:05:25:086] ping.settingsmanager[Debug]: "Load debugMode with:" true
[10:05:25:087] ping.settingsmanager[Debug]: "Load debugMode with:" true
[10:05:25:087] ping.settingsmanager[Debug]: "Load debugMode with:" true
[10:05:25:090] default[Warning]: Ping1DControlPanel.qml(116) qrc:/Ping1DControlPanel.qml:116: ReferenceError: startAngle is not defined
[10:05:25:090] default[Warning]: Ping1DControlPanel.qml(115) qrc:/Ping1DControlPanel.qml:115: ReferenceError: startAngle is not defined
[10:05:25:090] default[Warning]: Ping1DControlPanel.qml(120) qrc:/Ping1DControlPanel.qml:120: ReferenceError: animationType is not defined
[10:05:25:091] default[Debug]: Ping1DControlPanel_QMLTYPE_181(0x608000361f80, parent=0x604000155b30, geometry=0,0 562x150)
[10:05:25:097] ping.settingsmanager[Debug]: "Load debugMode with:" true
[10:05:25:100] ping.protocol.sensor[Debug]: Connecting to "LinkConfiguration{Name: Detector serial link, Sensor: Ping1D, LinkType: Serial, Arguments: (tty.usbserial-DM01NJ2Q:115200)}"
[10:05:25:100] ping.protocol.seriallink[Debug]: "LinkConfiguration{Name: Detector serial link, Sensor: Ping1D, LinkType: Serial, Arguments: (tty.usbserial-DM01NJ2Q:115200)}"
[10:05:25:128] ping.protocol.ping[Debug]: Start pre configuration task and requests.
[10:05:25:129] ping.filemanager[Debug]: Creating file name: "/Users/pbongaerts/Documents/PingViewer/Sensor_Log/20191101-100525129.bin"
[10:05:25:129] ping.protocol.filelink[Debug]: "LinkConfiguration{Name: , Sensor: UNKNOWN, LinkType: File, Arguments: (/Users/pbongaerts/Documents/PingViewer/Sensor_Log/20191101-100525129.bin:w)}"
[10:05:25:129] ping.protocol.sensor[Critical]: Connection with log fail ! "LinkConfiguration{Name: , Sensor: UNKNOWN, LinkType: File, Arguments: (/Users/pbongaerts/Documents/PingViewer/Sensor_Log/20191101-100525129.bin:w)}" "Unknown error"
[10:05:25:129] ping.devicemanager[Debug]: Available devices: QVector()
[10:05:25:131] qml[Debug]: DepthAxis.qml(146) 20 12
[10:05:25:423] ping.protocol.ping[Warning]: UNHANDLED MESSAGE ID: 1200
[10:05:25:430] ping.protocol.ping[Debug]:
PingConfiguration {
	1_pingInterval: 66
	1_speedOfSound: 1500000
	2_automaticMode: 1
	3_gainIndex: 6
	3_lengthDistance: 44011
	3_startDistance: 0
}
[10:05:25:438] ping.devicemanager[Debug]: Stop protocol detector service.
[10:05:25:564] ping.protocol.protocoldetector[Debug]: Scan finished.
[10:05:25:721] ping.protocol.ping[Debug]: "Ping-V3.27_115kb.hex"
[10:05:25:721] ping.protocol.ping[Debug]: "Ping-V3.27_9600b.hex"
[10:05:25:721] ping.protocol.ping[Debug]: "Ping_V3.26_115kb.hex"
[10:05:25:721] ping.protocol.ping[Debug]: "Ping_V3.26_9600b.hex"
[10:05:25:907] ping.protocol.ping[Debug]: "Device configuration does not match. Waiting for (66), got (0) for 1_pingInterval"
[10:05:25:907] ping.protocol.ping[Debug]: Device was running with last configuration in auto mode.
[10:05:26:381] ping.protocol.ping[Debug]: Device was running with last configuration in auto mode.
[10:05:26:381] ping.protocol.ping[Debug]: Last configuration done, timer will stop now.
[10:05:29:078] ping.protocol.protocoldetector[Warning]: Fail to open serial port: QSerialPort::PermissionError
[10:05:34:562] qml[Debug]: MainPage.qml(316) Key pressed:  16777248
[10:05:34:562] qml[Debug]: MainPage.qml(350) Ask the visualizer to handle shortcut.
[10:05:34:856] qml[Debug]: MainPage.qml(316) Key pressed:  16777267
[10:05:34:857] qml[Debug]: MainPage.qml(350) Ask the visualizer to handle shortcut.
[10:05:34:925] qml[Debug]: MainPage.qml(316) Key pressed:  16777266
[10:05:34:925] qml[Debug]: MainPage.qml(350) Ask the visualizer to handle shortcut.
[10:05:36:268] qml[Debug]: MainPage.qml(316) Key pressed:  16777248
[10:05:36:268] qml[Debug]: MainPage.qml(350) Ask the visualizer to handle shortcut.
[10:05:36:383] qml[Debug]: MainPage.qml(316) Key pressed:  16777267
[10:05:36:383] qml[Debug]: MainPage.qml(350) Ask the visualizer to handle shortcut.
[10:05:37:650] qml[Debug]: MainPage.qml(316) Key pressed:  16777248
[10:05:37:650] qml[Debug]: MainPage.qml(350) Ask the visualizer to handle shortcut.
[10:05:37:801] qml[Debug]: MainPage.qml(316) Key pressed:  16777249
[10:05:37:802] qml[Debug]: MainPage.qml(350) Ask the visualizer to handle shortcut.
[10:05:45:867] ping.settingsmanager[Debug]: "Load debugMode with:" true
[10:05:45:867] ping.settingsmanager[Debug]: "Load debugMode with:" true
[10:05:46:149] ping.networkmanager[Debug]: "Download [https://raw.githubusercontent.com/bluerobotics/ping-firmware/master/ping1d/Ping-V3.27_9600b.hex] -1 (31KB)"
[10:05:46:188] ping.networkmanager[Debug]: "Download [https://raw.githubusercontent.com/bluerobotics/ping-firmware/master/ping1d/Ping-V3.27_9600b.hex] 100 (361KB)"
[10:05:46:188] ping.networkmanager[Debug]: "Download https://raw.githubusercontent.com/bluerobotics/ping-firmware/master/ping1d/Ping-V3.27_9600b.hex finished"
[10:05:46:189] ping.flash[Debug]: Downloaded firmware: "/private/var/folders/gz/bv7bxycd3gng0px9b5mc7m6szxgcxg/T/Ping Viewer.qvoJFH"
[10:05:46:231] ping.protocol.ping[Warning]: Invalid frequency: 0
[10:05:46:231] ping.protocol.ping[Debug]: Ping frequency 0
[10:05:46:231] ping.protocol.ping[Debug]: Put it in bootloader mode.
[10:05:46:231] ping.protocol.ping[Debug]: Finish connection.
[10:05:47:234] ping.protocol.seriallink[Debug]: Port closed.
[10:05:47:235] ping.protocol.ping[Debug]: Save sensor configuration.
[10:05:47:235] ping.protocol.ping[Debug]: Start flash.
[10:05:48:236] ping.flash[Debug]: Found program in: "/Applications/pingviewer.app/Contents/MacOS/../../stm32flash"
[10:05:48:236] ping.flash[Debug]: Found program in: "/Applications/pingviewer.app/Contents/MacOS/../../stm32flash"
[10:05:48:236] ping.flash[Debug]: 3... 2... 1...
[10:05:48:236] ping.flash[Debug]: "\"/Applications/pingviewer.app/Contents/MacOS/../../stm32flash\" -w \"/private/var/folders/gz/bv7bxycd3gng0px9b5mc7m6szxgcxg/T/Ping Viewer.qvoJFH\" -v -g 0x0 -b 57600 /dev/tty.usbserial-DM01NJ2Q"
[10:05:48:748] ping.flash[Critical]: "Unexpected error in process: 0"
[10:05:48:748] qml[Debug]: FirmwareUpdate.qml(27) Flash procedure failed!
[10:05:48:748] qml[Debug]: FirmwareUpdate.qml(28) Error:
[10:05:49:249] ping.networktool[Debug]: Running release version: "v2.0.4" # 33555456
[10:05:49:250] ping.networktool[Debug]: Testing version: "continuous"
[10:05:49:250] ping.networktool[Debug]: Not a release. QRegularExpressionMatch(Valid, no match)
[10:05:49:250] ping.networktool[Debug]: Testing version: "continuous-fix_small_window"
[10:05:49:250] ping.networktool[Debug]: Not a release. QRegularExpressionMatch(Valid, no match)
[10:05:49:250] ping.networktool[Debug]: Testing version: "stable"
[10:05:49:250] ping.networktool[Debug]: Not a release. QRegularExpressionMatch(Valid, no match)
[10:05:49:250] ping.networktool[Debug]: Testing version: "v2.0.4"
[10:05:49:250] ping.networktool[Debug]: Possible new version.
[10:05:49:250] ping.networktool[Debug]: comparing version: "v2.0.4" # 33555456
[10:05:49:250] ping.networktool[Debug]: Testing version: "t2.0.3"