- 1 Root firmware
- 2 Enable SimplyPrint
This guide involves installing custom firmware (called "Rinkhals") on your Anycubic Kobra printer. Compatibility may not be intended by Anycubic and could void your warranty. Proceed at your own risk.
Welcome to the Anycubic Kobra setup guide for SimplyPrint!
In this guide, we'll walk you through the steps to connect your Anycubic Kobra to SimplyPrint using "Rinkhals", a custom firmware that enhances functionality while maintaining stock Anycubic features.
This guide is inspired by the excellent work of jbatonnet.
For the latest updates and more detailed information, please visit the official
Rinkhals GitHub repository.
Supported Printers
This guide currently supports the following Anycubic Kobra models:
- Kobra 3 (+ combo). Tested firmware versions: 2.3.8 - 2.3.8.9.
Note: firmware version 2.3.7 & 2.3.7.1 are known to have some instabilities. Read more on the Rinkhals repository. - Kobra 2 Pro with firmware 3.1.2.3 and motherboard Trigorilla Spe B v1.0.x
Note: firmware version 3.1.4 is known to be buggy. Read more on the Rinkhals repository. - Kobra S1 (+ combo). Tested firmware versions: 2.4.8.3 - 2.5.0.6 - 2.5.1.6
Other newer Kobra printers are not yet supported, but very well might be at some point.
Is Your Printer Not Supported?
If your Anycubic Kobra printer is not listed above, it may not be compatible with Rinkhals yet.
Check back later: Newer Kobra models may be supported in the future. For updates, visit the Rinkhals GitHub repository.
Using another printer? It may still be compatible with SimplyPrint using serial printing (OctoPrint setup) or a regular Klipper setup. Go back to the SimplyPrint setup guide and see other supported methods.
Installing Rinkhals Firmware and Integrating with SimplyPrint
Download Rinkhals:
- Head to the Rinkhals GitHub releases page.
- Download the latest release of Rinkhals
that supports your printer and its firmware version
- Important: check the release-notes; it will mention the supported printers and their firmware versions
- If the latest release notes that support for your firmware is not supported, or has been removed, scroll further down and find an older release.
- More setup info can be found on the Rinkhals GitHub page: https://github.com/jbatonnet/Rinkhals/wiki/Rinkhals-%E2%80%90-Installation-and-firmware-updates
Prepare the USB Drive:
- Format a USB drive as FAT32.
- Not sure how to format a USB drive? Right-click the drive on Windows and select "Format". On macOS, use Disk Utility and select "Erase" with FAT32 as the format.
- Create a directory named
aGVscF9zb3Nfon the USB drive.
- Format a USB drive as FAT32.
Install Rinkhals on the Printer:
- Copy the
update.swufile into theaGVscF9zb3Nfdirectory on the USB drive. - Plug the USB drive into the Anycubic Kobra printer.
- You should hear a beep, indicating the printer detected the update file.
- Wait about 20 seconds while the printer prepares the update.
- A progress bar will appear on the screen.
- Success: If the progress bar turns green and you hear two beeps, the printer will reboot, and Rinkhals is successfully installed.
- Failure: If the progress bar turns red and you hear three
beeps,
the installation failed. However, the printer should still function normally.
Check for more details in the
aGVscF9zb3Nf/install.logfile on the USB drive.
- Copy the