Check the listing for details. Upgraded BLTouch V3.1 Auto Leveling Sensor Kit For Creality Ender3 v2 3D Printer. Condition: New. Listed at 17.09 USD. 1.Automatic bed leveling kit, easy to achieve automatic bed leveling, the bl-touch sensor can be fully applied to any surface2.Easy Firmware Upgrade：Simply download the BLTouch firmware from the Creality official website and store the files in your printer's TF/SD card. Insert the card into the printer.Turn on the printer and wait for a few seconds until the firmware is updated. No need to use ISP burner and more convenient to use3.Suitable for Creality Ender3 v2/ Ender3/ Ender3 Pro/ Ender 3 Max/ Ender5/ Ender5 Pro/ CR-10 3D Printers (32 bit V4.2.2 or V4.2.7 motherboard only)Firmware：1.Download BL-Touch firmware from the official Creality website.2.Go to formatted SD card without any other files.3.Insert the 3D printer card slot directly to upd.