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I have a new Ender 3 V2 printer that I assembled. The printer reads the TF/SD stock card info but won't read the auto-level code I downloaded. It doesn't even show up on the card.

I downloaded auto-level code and the printer won't read that code, other than the factory-installed code that came with the printer. I formatted the SD card per advice but still no reading of the card by the printer.

This is my first 3D printer and I am not very tech-savvy but I think I've done everything right per instructions and descriptions I've seen online.

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  • $\begingroup$ What's the file name of the auto level code as you put it on your TF card? Also, welcome to 3D Printing Stack Exchange! Please take the tour and read over the FAQ -- it'll help you ask better questions and write better answers. $\endgroup$
    – Zeiss Ikon
    Aug 12 '21 at 18:31
  • $\begingroup$ ender+3+bed+level(1)zip $\endgroup$
    – Bam Steele
    Aug 12 '21 at 18:43
  • $\begingroup$ from thingiverse $\endgroup$
    – Bam Steele
    Aug 12 '21 at 18:44
  • $\begingroup$ I purchased a cr touch auto bed leveling sensor and from what i have researched I will need to download another gcode to run that sensor. if my printer wont read new gcodes that's due to be delivered today I am quite worried I wont be able to use the the new sensor . Thank you for the welcome. $\endgroup$
    – Bam Steele
    Aug 12 '21 at 18:52
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    $\begingroup$ Your printer doesn't know how to read a .zip file. It can only execute .gcode (or in the case of flashing new firmware, .bin or possible .hex). $\endgroup$
    – Zeiss Ikon
    Aug 12 '21 at 18:53
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  • Make sure your SD card is formatted to FAT32.

  • The printer can only understand files on the SD card that are .gcode or .bin . In your case, you will need to flash the pre-compiled firmware as a .bin file.

  • Make sure the file is named firmware.bin and that it is the right firmware for your 3D printer. It will not work if it is still in a .zip or .rar archive.

  • I do not own an Ender 3 V2 myself, but from experience, the screen may stay blank for around 5 seconds while the motherboard updates when you reboot the printer. If your printer does this while it updates, it can be a good way to tell if your firmware update worked.

  • On the LCD navigate the UI to find the Restore Defaults button.

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