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Fly Host Installation and Usage Guide

I. Preparations​

1. Power Requirements​

  • Power Standard: Requires an independent power adapter of 5V / 2A or higher.
  • Prohibited Actions: Except for the specific models listed below, it is strictly forbidden to power the device via the 3D printer mainboard interface.
    • ✅ Models Supporting Mainboard Power: C8, GEMINI, C5, C5V1.1, C8P
  • Risk Warning: Insufficient power supply will cause unstable device operation, frequent restarts, and may lead to hardware damage over time.

2. Storage Media Selection​

Storage TypeCompatible DevicesKey Notes
TF CardCompatible with all seriesUniversal solution, requires a standard card reader.
M2WE Solid State CardNon-Lite/MINI-PAD seriesDedicated solution, must be used with the M2SD writer.

TF Card Specification Recommendations:

  • Capacity: 16GB-128GB (32GB/64GB recommended)
  • Speed Class: Class10 or U1/U3
  • Brand Recommendations: SanDisk, Samsung, and other well-known brands.

3. Writing Tool Preparation​

  • TF Card: Standard TF card reader.
  • M2WE Card: Dedicated M2SD writer (required).

4. System Image Matching​

Select the corresponding system image based on the device's main control chip:

Main Control ChipApplicable Device Models
H618C8P, C5, C5-V1.1, PI-V3
H5PI, PI-V2, GEMINI series, C8
H3Lite2 series, MINI-PAD series

Image Download: FlyOS System Image Download Site

5. Supporting Resources​

  • Hardware: Type-C cable supporting data transfer.
  • Software Toolkit: Includes terminal tools, drivers, formatting tools, etc.
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II. System Installation Process​

  • As the tutorial is lengthy, please refer to the link below.
  • System Writing

III. Device Startup and Connection​

  • SSH Connection Tutorial

1. Hardware Connection​

  • Insert the system-written storage card.
  • Connect the independent power adapter.
  • Connect to the computer using a Type-C data cable.

2. Serial Terminal Configuration​

  • Launch the MobaXterm software.
  • Create a new Serial session.
  • Select the CH340 serial port, baud rate 115200.

3. System Startup Verification​

  • Observe the terminal log output after powering on.
  • Normal startup will display system operation information.
  • If there is no output, try pressing the Enter key to wake it.

4. Network Configuration​

After the system starts, configure Wi-Fi connection via the command line.

  • Network Connection Tutorial

IV. Common Issues and Maintenance Guide​

Boot Priority​

  • Issue: Boot sequence when both a TF card and an M2WE card are inserted.
  • Explanation: The system always boots from the TF card first, but this does not affect the normal use of the M2WE card's WiFi function after boot.
  • Solution: It is recommended to insert only a single system card for daily use to avoid confusion.

Storage Card Selection​

  • Issue: How should beginners choose the storage card type?
  • Solution:
    • Recommended Solution: TF card (high versatility, low cost, suitable for beginners).
    • Important Reminder: Using a TF card requires additional configuration of a Linux driver-free WiFi module.
    • Alternative Solution: M2WE card has built-in WiFi, but requires a dedicated writer.

M2WE Card Contact Issues​

  • Issue: M2WE card recognition is unstable or fails to boot.
  • Solution:
    • Temporary solution: Use a rubber band to reinforce the connection between the card body and the slot.
    • Long-term solution: Install a dedicated fixing component.
    • Fixing component download address:
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Device Maintenance Guide​

1. Shutdown Procedure

  • Always perform a proper shutdown using system commands.
  • Never disconnect power directly to prevent system damage.

2. System Updates

  • The system supports two update methods:
    1. Online Update: Automatically performed in the system background.
    2. Manual Update: Download the update package locally, then upload and install it via the system interface.
  • Note: The traditional FAST system full-disk writing upgrade method is still applicable.

3. Configuration Backup

  • Regularly back up printer configuration files to local storage devices.
  • Avoid configuration loss due to system issues.

4. Power Management

  • Must use an independent power supply for operation.
  • Avoid power interference affecting device stability.

5. Storage Card Protection

  • Do not format the storage card again after the system is written.
  • Prevent system file corruption that could cause the device to fail to boot.

OTA Update Instructions​

1. How to Perform an OTA Update

  • Please access your host's IP address in a browser and add the port number :9998 to access the OTA update interface.
    • Example: If your host IP is 192.168.1.100, access http://192.168.1.100:9998

2. Configuration File Safety

  • OTA updates are specially designed not to overwrite or modify your personal configuration files.

3. Update Process Precautions

  • Ensure stable power supply to the device during the update.
  • Unexpected power loss will cause the update to fail, potentially requiring a system re-write in severe cases.

4. Custom Code Handling

  • If you have modified Klipper configuration files or installed custom plugins,
  • OTA updates will automatically skip related files to ensure your modifications are preserved.

5. Important Reminder: Firmware Update

  • After each OTA update is completed, you must manually compile the Klipper firmware and then re-flash the lower computer firmware.
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