System Image Flashing
System Image Burning
System Introduction
FlyOS-Fast is a lightweight Linux system customized for 3D printing, supporting the entire series of Fly host platforms. Its features include:
- Fast startup, kernel optimization ensures Klipper real-time performance
- File system optimization, reducing the risk of failure to start due to power outages
- 30-second fast startup of KlipperScreen
- Pre-installed services such as Klipper, RRF, Mainsail, Fluidd, Moonraker, and KlipperScreen
- Support for switching between Klipper and RRF systems
- Support for one-click switching between Mainsail and Fluidd online
- Support for USB printing, power-off resumption printing, and serial screen
- Support for automatic firmware burning on boot (fly-c8, fly-geminiv3)
- Can set the default language and printer name of Fluidd and other front-end UIs in advance
If you need more OEM customization features (such as boot logo, preset configuration files, hiding Mainsail tab pages, etc.), please contact us.
This system is a lightweight customized system. The components and services built-in, such as klipper, are not the official version and do not support users to modify or upgrade them.
- The system account for FLYOS-FAST is
root
, and the password ismellow
Preparation before System Burning
- Prepare the required equipment
- If you use the TF card to start the system, you need the following equipment
- If you use the M2WE to start the system, you need the following equipment
- Card reader
- A TF card, capacity 16GB-128GB, with a transfer speed of class10 level or higher.
- It is recommended to use TF cards from well-known brands such as
SanDisk
,Samsung
, andKioxia
. Do not use counterfeit TF cards! - Windows system computer (Windows 7, Windows 10, Windows 11 can be used)
- M2WE (FLY proprietary device)
- M2SD (FLY burning device)
- Windows system computer (Windows 7, Windows 10, Windows 11 can be used)
- Installation diagram
-
Download the FLY-H5 system image:
- The current FAST version is FlyOS-FAST-
- Please note that you need to download the FLY-H5 image in the FlyOS-FAST- folder
- Baidu Netdisk:H5 system image
- GOOGLE Netdisk:H5 system image
tip
- System file naming rules:
FlyOS-Fast-[chip series]-[version number].img
, for example: FlyOS-Fast-H5-v1.0.0.img - Windows system downloads the
.exe
file, which is a 7z self-extracting archive. After downloading, double-click to open and extract to get the.img
file (only Windows system can extract) - Other systems such as macOS and Linux systems download the
.7z
file, which is a 7z compressed package. After downloading, use a tool that supports the 7z format to extract and get the.img
file - Due to the large size of the system file, other compression formats and source images are not provided temporarily
- This tutorial uses the
.exe
and GOOGLE Netdisk as examples
- System file naming rules:
- Access the network disk, click FlyOS-FAST-
- Click the image you need to download
- This tutorial needs to download Fly_FAST-H5.exe
- Click still download
-
Unzip the system image file to get the
.img
file.- Double-click or right-click to open FlyOS-Fast-H5.exe, wait a few seconds, and a window will pop up (if the system prompts it is not safe, select "More Info" -> "Run")
- You can choose the extraction directory, then click the
Extract
button and wait for the extraction to complete.
- After unzipping, a FlyOS-Fast-H5-vx.x.x.img file will be generated in the extraction directory.
x.x.x
is the system version number.
-
Install the device to be burned onto the computer
Burning the System
-
Open Rufus, select the device, and the selected device should display a capacity consistent with the inserted burning card.
-
Boot type selection
, this defaults to selectingImage file
. -
Select the image file, click the
Select
button next toBoot type selection
, and select the extracted.img
file. -
After selecting the image file,
Boot type selection
will change to the filename of the image file. -
Click the
Start
button. If a window pops up prompting to clear the disk data, clickOK
. -
After burning is complete, the computer will emit a beep sound, and the progress bar will show
Ready
. -
After burning is complete, do not remove the burning card immediately.
-
Open File Explorer and check if there is a U-disk or removable disk named
FlyOS-Conf
. -
Open
FlyOS-Conf
, if there are two files as shown in the picture below, it means the burning was successful. -
Install the system card onto the motherboard.
Installing the System Card
- Diagram of M2WE Installation to PI-V2
- Diagram of TF Card Installation to PI-V2


Installing the Antenna
- Install the antenna for
M2WE
or2.4G WiFi
module
- The FLY host machine requires either the
M2WE
or2.4G WIFI
module to use WiFi - Please note that the host machine does not support WiFis with Chinese names and does not support dual-band (2.4G and 5G) unification
- The red arrow points to the Wi-Fi antenna interface
- The Wi-Fi antenna port is
ipex1
- Please install the antenna on the M2WE, otherwise poor signal may cause connection failure to the router

- After completing the system card installation, you can proceed to the next step by connecting to the host machine via SSH
- Power on the host machine.
Your host machine is now ready to start up!!!
Please proceed to the next step: SSH Connection to Host Machine
Modification of Other System Configuration Options
For modification of other system configuration options, please refer to: Modification of System Configuration