System Image Flashing

System Image Flashing

System Introduction

FlyOS-Fast is a lightweight Linux system deeply customized for 3D printing, supporting all Mellow upper computer platforms. Its features include:

• Fast boot speed, kernel optimization ensures Klipper's real-time performance
• File system optimization reduces the risk of power failure causing boot failure
• KlipperScreen starts within 30 seconds
• Pre-installed services including Klipper, RRF, Mainsail, Fluidd, Moonraker, and KlipperScreen
• Supports switching between Klipper and RRF systems
• Supports one-click online switching between Mainsail and Fluidd
• Supports USB printing, power failure recovery, and serial screens
• Supports automatic firmware flashing on boot (fly-c8, fly-geminiv3)
• Allows pre-setting default language and printer name for front-end UIs like Fluidd

For more OEM customization features (such as boot logo, preset configuration files, hiding Mainsail tabs, etc.), please contact us.

Note

This system is a lightweight customized system. The built-in components and services such as klipper are not official versions and do not support user modifications or upgrades.

• The FLYOS-FAST system account is root, with password mellow

Preparing for System Flashing

1. Prepare the required devices

   • If using a TF card to boot the system, prepare the following devices:
     • Card reader
     • TF card, capacity 16GB-128GB, transfer speed Class10 or higher
     • It is recommended to use well-known brands such as SanDisk, Samsung, Kioxia TF cards; avoid off-brand TF cards!
     • A Windows system computer (supports WIN7, WIN10, WIN11)

2. Download the FLY-H3 system image:

   • The current FAST version is FlyOS-FAST-V1.2.48
   • Please download the FLY-H3 image inside the FlyOS-FAST-V1.2.48 folder
   • Click the download link below
   • Loading...
   tip

   • System file naming rule: FlyOS-Fast-[chip series]-[version number].img, for example: FlyOS-Fast-H3-v1.0.0.img
   • Windows system users should download the .exe file, which is a 7z self-extracting compressed package. After downloading, double-click to extract and get the .img file (can only be extracted on a Windows system)
   • For other systems such as MacOS and Linux, download the .7z file, which is a 7z compressed package. After downloading, use tools that support the 7z format to extract and get the .img file
   • Due to the large system file size, other compression formats and source image downloads are not currently provided
   • This tutorial uses .exe and Google Drive as examples
   • Access the drive, click on FlyOS-FAST-V1.2.48
   
   • Click on the image you need to download
   • For this tutorial, you need to download Fly_FAST-H3.exe
   
   • Click "Download Anyway"
   

3. Extract the system image file to get the .img file.

   • Double-click or right-click to open FlyOS-Fast-H3.exe, after a few seconds a window like the one below will pop up (if the system warns about security, choose "More Info" -> "Run")
   • You can select the extraction directory, then click the Extract button and wait for extraction to complete.
   
   • After extraction is complete, the file FlyOS-Fast-H3-vx.x.x.img will be generated in the extraction directory. x.x.x is the system version number.

4. Insert the device to be flashed into the computer

Flashing the System

1. Open Rufus, select the device. The displayed capacity should match the capacity of the inserted card.

   

2. For Boot selection, the default option Image file is sufficient.

3. For image file selection, click the Select button to the right of Boot selection, and choose the extracted .img file.

4. After selecting the image file, Boot selection will display the filename of the image.

   

5. Click the Start button. If a window pops up indicating that disk data needs to be erased, click OK.

   

6. After flashing is complete, the computer will emit a beep sound and the progress bar will show Ready.

   

7. Do not rush to remove the card immediately after flashing is complete.

8. Open File Explorer and check if there is a USB drive or removable disk named FlyOS-Conf.

   

9. Open FlyOS-Conf. If the two files shown in the image below exist, the flashing was successful.

   

10. Insert the system card into the motherboard.

Install System Card

• After flashing the system to the TF card, you need to connect the TF card to the back of the MINI PAD here; otherwise, the system cannot boot

Install Antenna

1. Install the antenna properly

warning

• Please note that the host computer does not support WiFi with Chinese names and does not support 5G WiFi

• The red arrow points to the WiFi antenna interface
• The WiFi antenna port is ipex1
• Please install the antenna; otherwise, poor signal may prevent connecting to the router

tip

• After installing the system card, proceed to the next step, connecting to the host via SSH

2. Power the host computer.
   At this point, your host computer is ready to boot up!!!
   Please proceed to the next step: SSH Connect to Host

Modifying Other System Configuration Options

For modifying other system configuration options, please refer to: Modifying System Configuration