You can download the latest binaries from the assets at the bottom of Ender 3S1: use this version if you have an Ender 3S1 printer with CRTouch, (F1 is for the STM32F103 and F4 is for the STM32F401 SoC).Ender 3v2 BLT: use this version if you installed a CR/3D/BLTouch level sensor in the Ender 3v2.

Ender 3v2 MM: if you have the Ender 3v2 near to stock then use this version (Manual Mesh).

You can modify your printer to meet these requirements. Touch or legacy monochrome screens are not supported.

A DWIN, DACAI, TJC or SYNWIT color display with encoder knob.

A compatible control board: Creality 4.2.2, 4.2.3, 4.2.7, V24S1_301 or SKR Mini E3 V3 for Ender series printers with a STM32F103 or STM32F401 SoC.

In order to use this firmware, your printer must meet the following requirements: The firmware and its wiki are not really intended for beginners but as a supplement to already existing guides. This is an universal firmware that can be used in both RET6 and RCT6 STM32FX chips that have 256k or 512k Flash memory. This firmware is based on Marlin, has been optimized and has enhancements for the Creality Ender 3 V2/S1 printer. Note2: Due to lack of program memory space in the STM32 F401RCT6 SoC some features had to be disabled for the F4 UBL firmware version, for example: BAUD_RATE_GCODE, INDIVIDUAL_AXIS_HOMING_SUBMENU, SOUND_MENU_ITEM, LONG_FILENAME_WRITE_SUPPORT, BINARY_FILE_TRANSFER, POWER_LOSS_RECOVERY. MPC is also being incorporated in replacement of the hot-end PID which will continue to be available on custom compiles. If you had a G29 to make an ABL leveling before each print change it to G29 P1 for UBL. Note1: In latest releases I'm promoting UBL versions over ABL, but ABL versions will be available through custom compile.

Many improvements from the latest Marlin's bugfix sources.

More #define flags to disable features to help to reduce code size.

Menu items value faster/smooth change rate.

Added Creality CV laser module support with automatic file type detection.

TJC support to enable preview and grid mesh viewer.

and many more fixes from latest Marlin's bugfix 2.1.x.

Fix a possible bug with filename drawing in printing page.

Force axes homing to allow parking at pause.

New C35 custom g-code for launch the bed tramming wizard.

Enable BLTouch HS mode for bed tramming wizard.Preview QR code removed for improve support with some display units.Enhanced preview with arbitrary thumbnail size.Dashboard Speed shows the current axes speed in mm/s intermittently with the speed percentage.Runout icon indicator over the Extruder flow dashboard icon.

Download molex pinout