Firmware Update via USB port
This update provides support for SeaGaugeG4 WIFI and Ethernet Gateways with NMEA 2000 interfaces.
New Supported Functions
- Update of firmware directly from local file without using internal SD card
- Update of WWWW SPIFFs directly from local file without using internal SD card
- Improved assignment of analog calibration files
- Improved WIFI connection using Station mode and weak networks
This update contains one seagaugeg4_9_28_6.bin and windows 11/10 utility to update via USB port
The complete update requires the following steps.
1) Unzip download to local windows directory
2) Connect SeaGaugeG4 with supplied USB cable to Windows OS 11/10
3) Launch the flash_download_tool_3.9.3.exe tool
4) Select ESP32 for DOWNLOAD MODE
5) Choose the download file and set the default address to 0
6) Choose the correct COM port and set baud to 115200
7) ERASE the existing firmware and spiffs partitions
8) START to upload new firmware
9) Reboot device to complete update
10) Reconnect to SeaGaugeG4 WFI using AP mode
***************** NOTE **************************
all current configurations will be reset to factory default
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Refer to app note https://digitalmarinegauges.com/content/SeaGauge/AN_SGG425090901_FirmwareUpdateUSB.pdf for complete details
release date 8/6/2026
