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LNB/Receiver Brick Recovery Guide

CoreWingAbout 5 minRemote ControlSirius固件升级刷砖救机线刷USBCoreWing

I. Tool Introduction

Sirius Firmware Upgrade Tool (https://sirius.corewing.com/) is an online flashing platform provided by CoreWing that allows firmware flashing via direct USB connection to the device, without needing WiFi, suitable for emergency recovery scenarios such as bricked devices or when WiFi access is not possible.

II. Receiver RX Wired Flashing Tutorial

The receiver supports three flashing methods. Any one of them can be used to complete the firmware flashing.

2.1 Comparison of Three Flashing Methods

Flashing MethodRequired EquipmentApplicable Scenarios
USB Direct FlashingUSB cable (Type-C)Requires USB-TTL tool
iNav PassthroughFlight controller (iNav firmware) + USB cableHighest success rate and relatively convenient wired flashing method
ArduPilot PassthroughFlight controller (ArduPilot firmware) + USB cableMay fail, recommend using the first two methods

2.2 Method 1: USB Direct Flashing

1. Preparation

  • 2G4 RX receiver
  • USB-TTL tool

image.png

  • Computer

2. Enter Flashing Mode

  1. Power off the receiver
  2. Connect the receiver to the USB-TTL module
接收机 → USB-TTL模块
5V → VCC
TX → RX
RX → TX
GND → GND
  1. Press BOOT 按钮 on the receiver and connect the USB-TTL device to the computer
  2. Release BOOT 按钮 and check if the computer recognizes the device
  3. Press Win+X to enter the Device Manager interface and check the receiver's port

image.png

3. Start Flashing

  1. Open a browser and visit the Sirius Firmware Upgrade Tool: https://sirius.corewing.com/

  2. For device type, select 接收机

  3. For protocol type, select 需要的固件协议

  4. For flashing method, select 直接连接（USB）

  5. For firmware version, select firmware starting with Sirius_2G4_ELRS or named rx-skyguy-nano-2400

image.png

  1. Click "Connect Device", select USB Serial Port(COM X), and click 连接

  2. Check if the flashing information is correct, check 烧写前擦除全部Flash, and click 开始烧录

image.png

  1. Wait for the flashing progress bar to complete, which will display 烧录完成

image.png

  1. After flashing is complete, disconnect the USB connection, power on the high-frequency module again, and check if OLED 屏幕 shows that the system has been entered

2.3 Method 2: iNav Passthrough Flashing (Recommended)

Important

When there is no USB-TTL module and the firmware is iNav, you can perform Passthrough flashing through an iNav flight controller

1. Preparation

  • 2G4 RX receiver
  • Flight controller (with iNav firmware already flashed, and wiring to the flight controller completed)
  • USB cable (to connect the flight controller to the computer)

2. Wiring Requirements

Connect the receiver to the flight controller's UART 6:

image.png

3. Start Flashing

  1. Open a browser and visit the Sirius Firmware Upgrade Tool: https://sirius.corewing.com/

  2. For device type, select 接收机

  3. For protocol type, select 需要的固件协议

  4. For flashing method, select iNav 透传

  5. Select the connected UART port as UART 6

  6. For firmware version, select firmware starting with Sirius_2G4_ELRS or named rx-skyguy-nano-2400

image.png

  1. Click "Connect Device", select CoreWingF405WingV2(COM X), and click 连接

image.png

  1. Check if the flashing information is correct, check 烧写前擦除全部Flash, and click 开始烧录

image.png

  1. Wait for the flashing progress bar to complete, which will display 烧录完成

image.png

  1. After flashing is complete, disconnect the USB connection, power on the high-frequency module again, and check if OLED 屏幕 shows that the system has been entered

2.4 Method 3: ArduPilot Passthrough Flashing

Important

When the receiver cannot enter flashing mode via USB and an ArduPilot flight controller is being used, Passthrough flashing can be performed through ArduPilot.

1. Preparation

  • 2G4 RX receiver
  • Flight controller (with ArduPilot firmware already flashed, and UART wiring completed)
  • USB cable (to connect the flight controller to the computer)

2. Wiring Requirements

Connect the receiver to the flight controller's UART 6:

image.png

3. Start Flashing

  1. Open a browser and visit the Sirius Firmware Upgrade Tool: https://sirius.corewing.com/

  2. For device type, select 接收机

  3. For protocol type, select 需要的固件协议

  4. For flashing method, select ArduPilot 透传

  5. Select the connected UART port as UART 6

  6. For firmware version, select firmware starting with Sirius_2G4_ELRS or named rx-skyguy-nano-2400

image.png

  1. Click "Connect Device", select CoreWingF405WingV2(COM X), and click 连接

image.png

  1. Check if the flashing information is correct, check 烧写前擦除全部Flash, and click 开始烧录

image.png

  1. Wait for the flashing progress bar to complete, which will display 烧录完成

image.png

  1. After flashing is complete, disconnect the USB connection, power on the high-frequency module again, and check if OLED 屏幕 shows that the system has been entered

III. Backpack Flashing Tutorial

The Backpack is the communication module inside the transmitter module, responsible for telemetry feedback and other functions.

Preparation

Hardware Preparation:

  • Sirius transmitter module (TX)
  • USB data cable (dual Type-C interface/USB-A to Type-C)
  • Computer

Entering Flashing Mode

  1. Power off the transmitter module
  2. Insert the USB data cable
  3. Press Win+X to enter the Device Manager interface and check the receiver port

image.png

Starting Flashing

Tips

Backpack firmware must be used with a matching transmitter module TX firmware:

  • ELRS CRSF mode → corresponds to Backpack firmware with CRSF suffix
  • ELRS MAVLink mode → corresponds to Backpack firmware with MAVLink suffix
  • mLRS mode → corresponds to mLRS Backpack firmware

  1. Open browser and visit Sirius Firmware Upgrade Tool: https://sirius.corewing.com/

  2. Select device type: 高频头

  3. Select protocol type: 需要的固件协议

  4. Select firmware version: Sirius_2G4_BACKPACK_XXX_XXX(XXX)

image.png

  1. Click "Connect Device", select USB JTAG/serial debug unit(COM X), click 连接

  2. Check if flashing information is correct, check 烧写前擦除全部Flash, click 开始烧录

image.png

image.png

  1. Wait for the flashing progress bar to complete, display 烧录完成 when done

image.png

  1. After flashing is complete, disconnect USB, power on the transmitter module again, and check if OLED 屏幕 shows the system has entered

IV. Transmitter Module TX Flashing Tutorial

The transmitter module is flashed using a USB data cable connected directly to the computer.

Preparation

Hardware Preparation:

  • Sirius transmitter module (TX)
  • USB data cable (dual Type-C interface/USB-A to Type-C)
  • Computer

Entering Flashing Mode

  1. Power off the transmitter module
  2. Insert the USB data cable
  3. Enter the Device Manager interface and check the transmitter module port

image.png

Starting Flashing

  1. Open browser and visit Sirius Firmware Upgrade Tool: https://sirius.corewing.com/

  2. Select device type: 高频头

  3. Select protocol type: 需要的固件协议

  4. Select firmware version: Sirius_2G4_TX_XXX_XXX(XXX)

image.png

  1. Click "Connect Device", select USB JTAG/serial debug unit(COM X), click 连接

  2. Check if flashing information is correct, check 烧写前擦除全部Flash, click 开始烧录

image.png

image.png

  1. Wait for the flashing progress bar to complete, display 烧录完成 when done

image.png

  1. After flashing is complete, disconnect USB, power on the transmitter module again, and check if OLED 屏幕 displays normally

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