# Not sure what to do with this error **URL:** \ **Category:** General Discussion\ **Created:** [May 14, 2025, 5:41pm UTC](https://klipper.discourse.group/t/not-sure-what-to-do-with-this-error/23447 "2025-05-14T17:41:35Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![anon20629761](https://avatars.discourse-cdn.com/v4/letter/a/977dab/32.png) [@anon20629761](https://klipper.discourse.group/u/anon20629761)\ **Post date:** [May 14, 2025, 5:41pm UTC](https://klipper.discourse.group/t/not-sure-what-to-do-with-this-error/23447/1 "2025-05-14T17:41:35Z")
![Screenshot_2025-05-14_13-23-21](https://global.discourse-cdn.com/free1/uploads/klipper/original/3X/9/7/97038ccbe9631156ad35fa49d58e707e184db81b.png) This is on a rooted Creality K1C and upgraded following the SimpleAF eddyNG instructions for the Big Tree Tech Eddy Duo. I know enough about Klipper to say I use it on my machine. I did try following the instructions for updating MCUs here: > **[Installation - Klipper documentation](https://www.klipper3d.org/Installation.html#building-and-flashing-the-micro-controller)** But I get errors pretty much right out of the gate. **root@K1C-122C /root/klipper [#]** _make menuconfig_ _make: avr-gcc: Command not found_ _Loaded configuration ‘/usr/data/klipper/.config’_ _Configuration saved to ‘/usr/data/klipper/.config’_ It brings up the “Klipper Firmware Configuration” window. However, I have no idea what I need to do with that. So, here I am. Asking for help on something that is probably spelled out somewhere that I haven’t found yet. I appreciate any help offered. Just grab me by the shoulders. Turn me to the way I need to go. And give me a big kick in the butt. ---
**Author:** ![anon20629761](https://avatars.discourse-cdn.com/v4/letter/a/977dab/32.png) [@anon20629761](https://klipper.discourse.group/u/anon20629761)\ **Post date:** [May 14, 2025, 5:46pm UTC](https://klipper.discourse.group/t/not-sure-what-to-do-with-this-error/23447/2 "2025-05-14T17:46:41Z")
Here is the klippy log file if it’s needed. [klippy (1).log.zip](https://klipper.discourse.group/uploads/short-url/ual3WWTK66OkMJ0fWld0tLJM7A5.zip) (36.6 KB) ---
**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:** [May 14, 2025, 6:35pm UTC](https://klipper.discourse.group/t/not-sure-what-to-do-with-this-error/23447/3 "2025-05-14T18:35:27Z")
> [@MaterCityMadman](#): > > if it’s needed. It is always needed (It was written in the template). The solution is written in the error message: ```auto This is frequently caused by running an older version of the firmware on the MCU(s). Fix by recompiling and flashing the firmware. Your Klipper version is: v0.12.0-420-gd2afd6a8 MCU(s) which should be updated: mcu: Current version v0.12.0-412-g8cd3d734f eddy: Current version v0.12.0-417-g3edd7087f nozzle_mcu: Current version v0.12.0-412-g8cd3d734f Up-to-date MCU(s): ``` ---
**Author:** ![anon20629761](https://avatars.discourse-cdn.com/v4/letter/a/977dab/32.png) [@anon20629761](https://klipper.discourse.group/u/anon20629761)\ **Post date:** [May 14, 2025, 6:40pm UTC](https://klipper.discourse.group/t/not-sure-what-to-do-with-this-error/23447/4 "2025-05-14T18:40:47Z")
I get that. And I went on to attempt to update the MCUs. Which got me to the point I made the post due to getting an error and not having a clue what the “Klipper Firmware Configuration” window needed. While appreciated, your reply is not helpful. Unless, I am missing something that is obvious to those familiar with the workings of Klipper. ---
**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\ **Post date:** [May 14, 2025, 7:58pm UTC](https://klipper.discourse.group/t/not-sure-what-to-do-with-this-error/23447/5 "2025-05-14T19:58:34Z")
As far as my knowledge of this printer goes: - It runs a modified version of Klipper. - It is not compatible with the main line Klipper version. - Rooting only allows you to experiment with additional components, not Klipper itself. - You are mostly limited to what the manufacturer provides. - Experimenting with Klipper itself could have unintended consequences, including catastrophic failure. Also see [3D Printers with Preinstalled and Modified Klipper Versions](https://klipper.discourse.group/t/3d-printers-with-preinstalled-and-modified-klipper-versions/20467) ---
**Author:** ![anon20629761](https://avatars.discourse-cdn.com/v4/letter/a/977dab/32.png) [@anon20629761](https://klipper.discourse.group/u/anon20629761)\ **Post date:** [May 14, 2025, 8:07pm UTC](https://klipper.discourse.group/t/not-sure-what-to-do-with-this-error/23447/6 "2025-05-14T20:07:52Z")
I guess that is one way to say folks here can’t be of help since it’s a “modified version”. I guess I can delete my membership then. Thanks anyway! ---
**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\ **Post date:** [May 14, 2025, 8:15pm UTC](https://klipper.discourse.group/t/not-sure-what-to-do-with-this-error/23447/7 "2025-05-14T20:15:54Z")
I suppose this is a way of telling you that it was your decision to buy a printer with closed-source modifications made by a greedy manufacturer who doesn’t care if you encounter problems as a result. It’s also a way of telling you that this manufacturer deliberately violates the licence of the open-source software, Klipper, and the idea of open source in general. It’s also a way of telling you that we are unable to help you due to this manufacturer’s business practices. Finally, it’s a way of telling you that you’re barking up the wrong tree. ---
**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\ **Post date:** [May 14, 2025, 8:19pm UTC](https://klipper.discourse.group/t/not-sure-what-to-do-with-this-error/23447/8 "2025-05-14T20:19:14Z")
User deleted on his own request. ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\ **Post date:** [July 25, 2025, 4:31pm UTC](https://klipper.discourse.group/t/not-sure-what-to-do-with-this-error/23447/10 "2025-07-25T16:31:41Z")
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