I have an Ender 3 Pro. What a great piffling printer.

I bought mine through Blindside Proficient. I wasn’t really entirely convinced that Blindside Good was a legit business at the time.

But Bang Good
is
real and I was delighted when my printer arrived, having travelled all the manner from Mainland china in a swell little box.

I got it set upwardly hands enough and started my journeying into the strange world of 3D printing.

Subsequently I’d filled a shelf with red plastic tidbits, my Ender 3 started misbehaving.

I’d ability it on, the display would light up blue – but without any text on it.

I knew that all of the cables were in the correct slots – I had already printed 30 strange plastic objects.

I double checked that the cables hadn’t fallen out. Everything looked fine.

Subsequently some fourth dimension I figured out that
I had accidentally removed the firmware.

If something goes incorrect with the firmware, the printer doesn’t know how to tell you what has happened.

The primary fan spins upwards as normal and the screen turns on, merely doesn’t say anything on information technology.

Ender 3 Firmware Update Screen Is Making Noise
This is an AI generated epitome, from the prompt “dead 3D printer”. There are so many details in this that I dear.

How I accidentally removed the firmware

In the time before I had
Octopi
set, I would download models from
Thingiverse
and manually ferry the files over to the printer on a micro SD.

I had a new model to print. I loaded an SD card into the printer and switched it on. Bare screen.

I switched it on and off a couple of times.

Nonetheless blank.

I figured I might have fried some internal component by moving the tray manually – did I forcefulness some little motor to spin at speeds wildly out of the expectations of the designers?

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I had booted upwards the printer with the “incorrect” SD card in it and that somehow had messed up the firmware.

The SD carte that caused trouble for me was ane that was loaded with Octopi.

The printer powered up and replaced information technology’s firmware with some other
.bin
file that it found on the SD card. It must have idea it was some fresh new firmware.

With the firmware gone, my Ender 3 forgot how to be a 3D printer and transformed into a strange desk ornamentation.


Look familiar?

I kept digging through forums until I got to the bottom of it.

At first I hadn’t considered that I’d flashed the firmware. I was under the impression that you needed an Arduino and a bunch of cables to practise that. That was in fact the example with the original Ender.

However, since the arrival of the Ender V-2, both the Ender 3 and Ender iii Pro models send with a motherboard which can flash firmware via the SD slot.

This
automatic flash
feature must be very handy in the factory, but it should come with a warning sticker or something.

Every day, all over the globe, people are switching their printers on and off, hoping the blue screen goes away.

It doesn’t go away.

Until now.

Easy fix for the bluish screen of death

The set up is easy.

  • Download the
    Ender 3 Pro firmware
  • Put this
    .bin
    file onto the
    root level
    of an SD carte.
  • Power off your Ender three.
  • Insert the holy SD carte du jour that you but created.
  • Power upwards your Ender 3.
    • The screen will remain blank for a few seconds simply then will boot up every bit normal.
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The firmware that worked for me was this one:

Ender-iii Pro_4.2.2_Firmware_Marlin2.0.1 - V1.0.1.bin

I institute that file in the Creality Google Drive folder
here.

That’s it.

Your printer should be dorsum to normal – bold yours had the aforementioned problem as mine did.

Peradventure something more terrible has happened to your one.

This approach is unlikely to work for fire-damaged or submerged printers.

I hope that helped

It took some Googling to effigy this out, then I idea I’d write information technology up and save someone some time. Let me know how you lot get on.

Y’all can
buy me a java
if you’d like.

Happy printing.