I have recently replaced the motherboard of my Ender 3 V2 Neo from a Creality 4.2.2 to 4.2.7 motherboard.

With all the frustration, I was left with the Creality splash screen with numbers in the bottom of the screen following contents which got me nowhere.

There’s no streamline instructions showing how to install this firmware onto a clean motherboard so I decided to make this thread and explain the process on how I successfully made the installation.

I am by no means an expert or advicing on programming or 3D printing, so please don’t criticize this process.

I hope below can be of help to those with the same printer and similar issues.

  • Format micro SD Card

Note: The motherboard is very picky with micro SD cards. For the installation I used: 2GB Sandisk micrSD. Click on this link for how to choose the correct micro SD card: https://www.youtube.com/watch?v=B_-wZxqGprE

  • Format micro SD to FAT32 with 4096 bytes (Do a full format not a quick format)
  • Download 4.2.7 Creality Firmware

– Ender-3 V2 Neo-Marlin2.0.8.3-HW-V4.2.7-SW-V1.1.5-CR-Touch-Filament (260 ℃)

– Ender-3 V2 Neo-Marlin2.0.8.3-HW-V4.2.7-SW-V1.1.8-CR-Touch (260 ℃)

– Ender-3 V2 Neo-Marlin2.0.8.3-HW-V4.2.7-SW-V1.1.8-CR-Touch-SpiritExtruder (300 ℃)

Note: I chose the V1.1.5 from the list for simple installation (The installation for the other versions I believe is similar)

  • Screen Firmware Installation

  • Open the version file and open the ‘Screen’ folder.

  • Copy the ‘private and TJC_SET’ folders and the firmware.zlib file to your formatted micro SD Card. (This are your screens firmware)

  • With the printer off, unscrew the four screws in the back of the screen.

  • You will find a micro SD slot when you open the back. Insert the micro SD into the slot. Make sure the screen cable is still connected to the screens mother board.

  • Turn on your printer. The screen will have a white background and the process of installing the firmware. ‘Successful 100%’ will indicate on the screen once finished.

  • Turn off the printer and remove the micro SD from the card slot on the screen.

  • Screw the back with the four screws removed earlier.

  • Motherboard Firmware Installation:

  • Delete all the screen firmware from the micro SD card.

  • Copy the: Ender-3 V2 Neo-Marlin2.0.8.3-HW-V4.2.7-SW-V1.1.8-CR-Touch-SpiritExtruder (300).bin

  • This is your motherboards firmware.

  • With the printer off, insert the micro SD card in the front slot of your printer.

  • Turn the printer on

  • You will see the Creality splash screen and a loading bar as the firmware loads. This will take a couple of minutes.

  • A successful installation will take you to your printers settings menu.

  • Check the firmware in the info section of your printer settings.

  • Turn off the printer and remove the micro SD card.

  • Proceed with how you would normally print.

Please let me know how this helped.