# Klipper cannot update MCU

**URL:** <https://klipper.discourse.group/t/klipper-cannot-update-mcu/16943>\
**Category:** General Discussion\
**Created:** [June 9, 2024, 7:54pm UTC](https://klipper.discourse.group/t/klipper-cannot-update-mcu/16943 "2024-06-09T19:54:12Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![AndyBrew](https://avatars.discourse-cdn.com/v4/letter/a/a4c791/32.png) [@AndyBrew](https://klipper.discourse.group/u/AndyBrew)\
**Post date:** [June 9, 2024, 7:54pm UTC](https://klipper.discourse.group/t/klipper-cannot-update-mcu/16943/1 "2024-06-09T19:54:12Z")

</div>

### Basic Information: MCU issue

Printer Model: Elegoo Neptune 4 max  
 MCU / Printerboard: unsure  
 Host / SBC  
 klippy.log

_Fill out above information and_ **_in all cases attach your_ `klippy.log` _file_** (use zip to compress it, if too big). _Pasting your_ `printer.cfg` _is **not** needed_  
_ **Be sure to check our “Knowledge Base” Category first. Most relevant items, e.g. error messages, are covered there** _

### Describe your issue:

Im having this weird issue where im trying to install the update but i got back this error message from Klipper saying  
“Can not update MCU mcu config as is is shutdown. Once the underlying issue is corrected, use the. FIRMWARE\_RESTART command the.config, and restart the host software..Error configuring printer.”

I tried looking online for answers but most of what im finding has to do with RPi stuff and im not running one as my printer is right next to my desk

---

<div class="post-metadata">

**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\
**Post date:** [June 9, 2024, 7:59pm UTC](https://klipper.discourse.group/t/klipper-cannot-update-mcu/16943/2 "2024-06-09T19:59:50Z")

</div>

Hello @AndyBrew !

Please!

 ![grafik](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/f/f9da4dbe000730dd13b768e2d08b8dff0357056c.png)

---

<div class="post-metadata">

**Author:** ![AndyBrew](https://avatars.discourse-cdn.com/v4/letter/a/a4c791/32.png) [@AndyBrew](https://klipper.discourse.group/u/AndyBrew)\
**Post date:** [June 9, 2024, 8:18pm UTC](https://klipper.discourse.group/t/klipper-cannot-update-mcu/16943/3 "2024-06-09T20:18:44Z")

</div>

right. im new to this. i dont know what either of those are

---

<div class="post-metadata">

**Author:** ![LifeOfBrian](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/lifeofbrian/32/2380_2.png) [@LifeOfBrian](https://klipper.discourse.group/u/LifeOfBrian)\
**Post date:** [June 9, 2024, 9:56pm UTC](https://klipper.discourse.group/t/klipper-cannot-update-mcu/16943/4 "2024-06-09T21:56:21Z")

</div>

Then you should read the Klipper documentation.  
We can’t help you without relevant information.

---

<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\
**Post date:** [August 8, 2024, 9:56pm UTC](https://klipper.discourse.group/t/klipper-cannot-update-mcu/16943/5 "2024-08-08T21:56:38Z")

</div>

Closed on August 8, 2024, 9:56pm UTC

This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.