K2 Pro & CFS Firmware Upgrade Guide

Keeping your Creality K2 Pro and CFS system up to date is essential for stable performance, feature improvements, and compatibility fixes.

This guide explains K2 Pro and CFS firmware formats, USB upgrade and rollback methods, and online firmware updates, along with important post-upgrade calibration steps.

K2 Pro & CFS Firmware Overview

Before upgrading, it’s important to understand how firmware works on the K2 Pro ecosystem:

• K2 Pro firmware format: .img
• CFS firmware format: .bin
• CFS firmware upgrades must be performed through the printer while the CFS is connected
• During a K2 Pro firmware upgrade, if the system detects that the connected CFS firmware version is outdated, the CFS firmware will be automatically and forcibly upgraded

This ensures version compatibility between the printer and the filament system.

How to Check the Current Firmware Version

You can view the installed firmware version directly on the printer screen:

1. Go to Settings

2. Open Version Information

3. Check the current K2 Pro and CFS firmware versions

This step is recommended before downloading or rolling back firmware.

K2 Pro & CFS Firmware Download Links

Download the correct firmware version from Creality Cloud based on your network region:

Creality Cloud Firmware Download

Always confirm the firmware matches your exact model.

Upgrade or Downgrade Firmware via USB Drive

Step 1: Prepare the USB Drive

• Download the K2 Pro firmware (.img) file
• Copy it directly to the root directory of a USB drive

Step 2: Install Firmware on the Printer

1. Insert the USB drive into the K2 Pro

2. Follow the on-screen prompt and tap Upgrade

3. Wait for the process to complete

4. The printer will restart automatically after installation

Required Calibration After USB Upgrade

After the firmware update is complete:

1. Go to Settings → Device Self-Test

2. Select Input Shaping

3. Tap Start Detecting

4. Wait until calibration finishes before printing

Important:

Exit the filament menu and retract filament before running Input Shaping calibration.

Online Firmware Upgrade via Printer Screen

The K2 Pro also supports direct online firmware upgrades.

Prerequisites

• The printer must be connected to the internet
• The printer must be linked to your Creality Cloud account

Step by Step Online Upgrade

Step 1: Check for Updates

• Go to Settings → Version Checking
• If a new version is available, a red dot notification will appear

If you have multiple CFS units, ensure only one CFS is connected during the upgrade. This limitation will be resolved in future firmware versions.

Step 2: Download Firmware

• Tap Download
• The installation will begin automatically once the download finishes

Step 3: Automatic Restart

• Wait for the installation to complete
• The printer will restart automatically

Step 4: Post-Upgrade Calibration

After rebooting:

1. Go to Settings → Device Self-Test

2. Enable Input Shaping and Auto Leveling

3. Tap Start Detecting

4. Begin printing after calibration completes

Key Notes for Successful Firmware Upgrades

• Always perform calibration after a firmware update
• Keep only one CFS connected during upgrades
• Ensure stable power during the entire process
• Forced CFS upgrades are normal when firmware versions are mismatched

Learn more about:

Creality K2 Pro Error Codes Troubleshooting >>

Creality K2 Plus vs. K2 Pro vs. K2 >>

Conclusion

Updating your K2 Pro and CFS firmware ensures better print quality, improved motion control, and smoother system integration. Whether you prefer USB-based upgrades or online updates, following the correct calibration steps after installation is critical for reliable results.

For best performance, always use official firmware from Creality Cloud and complete Input Shaping and Auto Leveling before resuming production prints.