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How to Update LNB Firmware for Vantac Lite

CoreWingAbout 5 minRemote ControlELRS固件更新VantacLite高频头WiFi

I. Via WiFi

On your computer, launch ExpressLRS Configurator and select WiFi in the Flashing Method option.
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Method 1: Manual Upload via Local WiFi

Important

This method is only available if you have previously flashed or configured your TX module to use your home WiFi SSID and password, and the module can successfully connect to that WiFi network.

  1. On your computer, launch ExpressLRS Configurator, ensure the Official Releases tab is active, and select the Released version to flash to your TX module.
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  2. Select the Device Category and Device target that match your hardware.
  • Device Category: Vantac 2.4 GHz
  • Device: Vantac Lite 2.4GHz TX
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  1. Set the Flashing Method to WiFi
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  2. Set the firmware options for the device.
  • Regulatory Domain (Required, select the domain appropriate for your location or country where you will be flying)
  • Binding Phrase (Optional but highly recommended. Note this phrase as it should be the same on your other devices, otherwise they won't bind or sync)
  • Local WiFi Network Credentials (Optional. Will be used when the device next enters WiFi mode).
    image.png
  1. Click the Build button.
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  2. After the build process is complete, a Temp folder window should pop up.
  • Do not close this Temp folder as this is where you will get the firmware file for the next steps.
  • If you plan to upload the firmware file later using a phone or tablet, copy the firmware file to your device.

Important

With the release of ExpressLRS 3.3.0 and ExpressLRS Configurator 1.6.0, only one file firmware.bin will be displayed, use this file for the subsequent steps.

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7. Press the SYS key on your transmitter, the radio will display the tools menu where you can find the Lua script.

  • Older radios or radios with only one menu button must long-press the Menu key to access the System Menu.
  • Refer to your Radio user manual for instructions on how to access the system menu.
  1. Scroll down and select ExpressLRS. If you can't find the script, download the ExpressLRS Lua script and save it to your Radio's SD Card Scripts/Tools/ folder.
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  2. Press Enter to load it, scroll down and select WiFi Connectivity
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  3. Select and press Enable WiFi
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  4. It will display entering WiFi mode, keep this page as is.
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  5. Turn on WiFi on your computer, connect to the antenna's WiFi, the password is lowercase :expresslrs.
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  6. After connecting to the antenna's WiFi, your browser will automatically redirect to the firmware flashing webpage. If it doesn't redirect automatically, manually enter 10.0.0.1 in your browser and press Enter to open the antenna configuration page. On the configuration page, click Load Firmware, select the downloaded bin firmware file, and flashing will start automatically.
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  7. Until the following popup appears on the webpage, it means the antenna firmware has been flashed successfully.
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  8. On your transmitter, long press RTN to exit the ExpressLRS Lua script. Then reload it to check the ExpressLRS firmware version and verify that your TX module has been updated.
    Method 2: Auto Upload
    This method is only available if you have previously flashed your TX module to use your home WiFi SSID and password, and the module can successfully connect to that WiFi network.
    Additionally, MDNS must be working properly for your browser to resolve the address http://elrs_tx.local and load the ExpressLRS Web UI from that address.
  9. Press the SYS key on your transmitter, the radio will display the tools menu where you can find the Lua script.
  • Older radios or radios with only one menu button must long-press the Menu key to access the System Menu.
  • Refer to your Radio user manual for instructions on how to access the system menu.
  1. Scroll down and select ExpressLRS. If you can't find the script, download the ExpressLRS Lua script and save it to your Radio's SD Card Scripts/Tools/ folder.
    image.png
  2. Press Enter to load it, scroll down and select WiFi Connectivity
    image.png
  3. Select and press Enable WiFi
    image.png
  4. It will display entering WiFi mode, keep this page as is.
    image.png
  5. On your computer, launch ExpressLRS Configurator, ensure the Official Releases tab is active, and select the Released version to flash to your TX module.
    image.png
  6. Select the Device Category and Device target that match your hardware.
    image.png
  7. Set the Flashing Method to WiFi
    image.png
  8. Set the firmware options for the device.
  • Regulatory Domain (Required, select the domain appropriate for your location or country where you will be flying)
  • Binding Phrase (Optional but highly recommended. Note this phrase as it should be the same on your other devices, otherwise they won't bind or sync)
  • Local WiFi Network Credentials (Optional. Will be used when the device next enters WiFi mode).
    image.png
  1. Click the Flash button.
    image.png
  2. Wait for the upload to complete. A green success bar will appear in ExpressLRS Configurator.
    image.png
  3. On your transmitter, long press RTN to exit the ExpressLRS Lua script. Then reload it to check the ExpressLRS firmware version and verify that your TX module has been updated.

II. Via UART

Start ExpressLRS Configurator on your computer and select UART in the Flashing Method option.
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  1. Connect your external transmitter module to your computer using a USB cable, preferably after removing it from the RC transmitter.
  2. Verify that your transmitter module is properly detected as a USB to UART device. Windows users can check this in the Ports (COM & LPT) group in Device Manager.
    If the TX module is not detected correctly, drivers are required. Common USB to UART chips used in ExpressLRS modules include: CP210x, CH340, and CH9102 (link to driver download page).
  1. Start ExpressLRS Configurator on your computer, ensure the Official Releases tab is active, and select the Released version to flash to the TX module.
    image.png
  2. Select the Device Category and Device target that match your hardware.
  • Device Category: Vantac 2.4 GHz
  • Device: Vantac Lite 2.4GHz TX
    image.png
  1. Set the Flashing Method to UART
    image.png
  2. Set the firmware options for the device.
  • Regulatory Domain (required, select the domain appropriate for your location or country)
  • Bind Phrase (optional but highly recommended. Note this phrase as it should be the same on your other devices, otherwise they won't bind or sync)
  • Local WiFi Network Credentials (optional. Will be used when the device next enters WiFi mode).
    image.png
  1. Click the Flash button.
    image.png
  2. Wait for the upload to complete. A green success bar will appear in ExpressLRS Configurator.
    image.png
  3. Unplug your transmitter module from USB.
  4. Reconnect your transmitter module to the external module bay of your RC transmitter.
  5. Use the ExpressLRS Lua script in the tools menu to verify that the firmware version has been updated.
    — This article is referenced from ExpressLRS Getting Started: https://www.expresslrs.org/quick-start/transmitters/vantac-lite/#flashingupdating-your-tx-module-firmware
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