Upgrading or re-flashing the Anycubic Chiron firmware requires a direct USB connection to a computer. You cannot update the Chiron's stock Trigorilla board via the SD card slot. Prerequisites A computer with or PrusaSlicer installed. A high-quality USB Type-B cable (the square printer cable). The downloaded Anycubic_Chiron_v1.3.5.hex file. Step 1: Connect the Printer Power off your Anycubic Chiron.
Because the Chiron is a legacy machine, it is no longer prominently featured on the main Anycubic Global Firmware Page . However, the official package can still be found via verified developer repositories and regional manufacturer servers:
Follow these steps precisely to update your Anycubic Chiron to stock version 1.3.5. Step 1: Download the Firmware File
The for a custom firmware is based on Marlin 2.0.x , specifically the version created and maintained by a developer known as "coolio986" . This open-source firmware is a complete overhaul of the printer's operating system, offering a suite of improvements over Anycubic's stock 1.3.5. Many users have successfully transitioned to this firmware from the stock version.
Over the years, the firmware has circulated on various 3D printing forums. Users have shared links to the elusive 1.3.5 .hex file on sites like Google Drive or within forum threads. Anycubic Chiron Firmware 1.3.5 Download
| Issue | Probable Cause | Solution | | :--- | :--- | :--- | | | Corrupt firmware file or SD card error. | Reformat SD card to FAT32 (Allocation size 4096 bytes) and re-copy the .bin file. | | "No TF Card" Error | Card unreadable or incompatible. | Try a different SD card (smaller capacity, e.g., 8GB or 16GB). | | Version Number Unchanged | Old firmware cached. | Ensure the file is named firmware.bin and contains the new binary data. | | Thermal Runaway Error | PID values mismatched. | Run PID Autotune. If persistent, check thermistor cabling for loose connections. |
Newer versions may include screen-specific firmware. This usually requires placing the .bin file on a FAT32-formatted SD card and inserting it directly into the screen's internal slot (if available). Alternative: Custom Marlin Firmware
Anycubic Chiron Firmware 1.3.5 remains a viable and stable operating system for this printer model. By following the acquisition and installation protocols outlined in this paper, users can successfully upgrade their machine to benefit from improved thermal safety and interface responsiveness. Regular maintenance of the firmware is essential for print quality and the longevity of the hardware components.
This is a great secondary source for older versions if you need to roll back. Key Improvements in Version 1.3.5 A high-quality USB Type-B cable (the square printer cable)
The most common method to flash the Anycubic Chiron is using Ultimaker Cura . Anycubic Chiron Firmware Update - How to Install!
The Anycubic Chiron remains a favorite among 3D printing enthusiasts who need a massive build volume without breaking the bank. However, maximizing the potential of this 400x400x450mm giant requires stable software. Upgrading to the Anycubic Chiron Firmware 1.3.5 is one of the most reliable ways to fix factory bugs, improve leveling accuracy, and ensure safer operation.
Connect your printer to a terminal interface (like Cura's Monitor tab, Pronterface, or OctoPrint) and send the following G-code commands: M502 - Resets the firmware to hardcoded factory defaults. M500 - Saves those default settings to the EEPROM memory. 2. Run the 25-Point Auto-Bed Leveling
Users have uploaded requested source files and compiled versions to GitHub Issue Threads to assist those with "bricked" screens or broken factory installs. 3. Installation Procedure Because the Chiron is a legacy machine, it
: Use a high-quality, short cable to ensure data stability during the flash.
Anycubic Chiron stock firmware is primarily used for printers equipped with the newer TFT touch panel. While often omitted from the official English support site, you can download it via the following sources: Official Download Links Direct Download (ZIP) : Anycubic Official Firmware v1.3.5
For most users, staying with the official, correct version for your screen (whether 1.3.0 or 1.3.5) is a safe choice. However, the far more rewarding path is to embrace the community-driven Marlin firmware, which transforms your Chiron from a good printer into a great one, loaded with modern features, safety enhancements, and improved print quality. By understanding the screen differences, knowing how to install correctly, and exploring these open-source alternatives, you can master your machine and take your large-format 3D printing to the next level.