# Kobra 2 Trigorrila pro b v1 0.2 **URL:** \ **Category:** General Discussion\ **Created:** [November 22, 2024, 11:13am UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202 "2024-11-22T11:13:38Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![Der\_Ozzy](https://avatars.discourse-cdn.com/v4/letter/d/97f17d/32.png) [@Der\_Ozzy](https://klipper.discourse.group/u/Der_Ozzy)\ **Post date:** [November 22, 2024, 11:13am UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/1 "2024-11-22T11:13:38Z")
### Basic Information: Printer Model: Anycubic Kobra 2 MCU / Printerboard: Trigorrila Pro B v1 0.2 Host / SBC klippy.log Hello everyone, I’ve had a Kobra 2 Neo for a while now and have been running it successfully with Klipper. I recently bought a used Kobra 2 and wanted to flash it to Klipper, but no matter what I tried, it wouldn’t start the flash process. Oh yes, I control my 3D printer via an additional PC with Linux. When I try to read the ID with ls dev serial by id, it only shows me 1, even when both printers are connected to the PC, both are shown with ttyusb0 and usb 1 via dmseg. I’ve also tried all the suggestions in other forums, but nothing helps. Do you have any ideas what I could try? It recognizes the SD card with print files, but when I load the firmware onto it, the printer doesn’t start anything except starting normally. ---
**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:** [November 22, 2024, 11:49am UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/2 "2024-11-22T11:49:14Z")
Hello @Der_Ozzy ! Please in Englisch and please fill in the template. > [@How-To Ask for Help](https://klipper.discourse.group/t/how-to-ask-for-help/6327/1): > > How-To Ask for Help General All contributors here help out in their spare time and because they want to give something back to the Klipper project. Be respectful and patient. If someone knows the answer to your question, they will answer it. Choose the right Category Questions / Issues should go into the General Discussion category most of the time. Filling the template is mandatory. The categories Config, Developers and Macros are used to post results of one’s work for the benefit of others T… ---
**Author:** ![hcet14](https://avatars.discourse-cdn.com/v4/letter/h/ecd19e/32.png) [@hcet14](https://klipper.discourse.group/u/hcet14)\ **Post date:** [November 24, 2024, 2:02pm UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/3 "2024-11-24T14:02:42Z")
Welcome Der\_Ozzy, installation of Klipper on an Anycubic Kobra 2 seems to be a bit unusual. I don’t own or know the printer. @Function3D wrote a good manual [Klipper install Anycubic kobra 2 - #123 by Function3D](https://klipper.discourse.group/t/klipper-install-anycubic-kobra-2/8549/123) The whole topic is quite interesting to read. Good luck, hcet14 ---
**Author:** ![Der\_Ozzy](https://avatars.discourse-cdn.com/v4/letter/d/97f17d/32.png) [@Der\_Ozzy](https://klipper.discourse.group/u/Der_Ozzy)\ **Post date:** [November 26, 2024, 12:19am UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/4 "2024-11-26T00:19:22Z")
thanks for the answer and the tip, I’ll read it through and give feedback if it worked ---
**Author:** ![donvido](https://avatars.discourse-cdn.com/v4/letter/d/a6a055/32.png) [@donvido](https://klipper.discourse.group/u/donvido)\ **Post date:** [November 26, 2024, 11:02am UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/5 "2024-11-26T11:02:44Z")
Checkout this thread: > [@"Endstop y still triggered after retract" Error after power-up](https://klipper.discourse.group/t/endstop-y-still-triggered-after-retract-error-after-power-up/15939): > > Basic Information: Printer Model: AnyCubic Kobra 2 MCU / Printerboard: Trigorilla Pro B V1.02 [klippy.log](https://klipper.discourse.group/uploads/short-url/mxCgi0c7lw20LsTGCFLpQu8w4tu.log) (44.0 KB) Everytime I start up my AnyCubic Kobra 2 and run a HomeAll (or Home Y) I get the “Endstop y still triggered after retract”-error. It is running directly into the endstop an then throwing the error. There is no retraction and no 2nd homing. If I run the homing command a 2nd time it runs as it should. If I move the bed manually into the endstop before calling the home comman… I used the same manual and got “Endstop y still triggered after retract” Errors ---
**Author:** ![Der\_Ozzy](https://avatars.discourse-cdn.com/v4/letter/d/97f17d/32.png) [@Der\_Ozzy](https://klipper.discourse.group/u/Der_Ozzy)\ **Post date:** [November 26, 2024, 12:37pm UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/6 "2024-11-26T12:37:38Z")
I’ve tried everything I could find but the Kobra 2 won’t flash. It recognizes the SD card if there are print files on it but if only the firmware is on it and I switch the printer on, nothing happens except that it starts normally. I’m going to buy a different board and run Klipper on it. ---
**Author:** ![donvido](https://avatars.discourse-cdn.com/v4/letter/d/a6a055/32.png) [@donvido](https://klipper.discourse.group/u/donvido)\ **Post date:** [November 26, 2024, 12:43pm UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/7 "2024-11-26T12:43:07Z")
Did you rename the file from klipper.bin to firmware.bin? ---
**Author:** ![Der\_Ozzy](https://avatars.discourse-cdn.com/v4/letter/d/97f17d/32.png) [@Der\_Ozzy](https://klipper.discourse.group/u/Der_Ozzy)\ **Post date:** [November 26, 2024, 1:58pm UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/8 "2024-11-26T13:58:51Z")
Yes, I have. I have also tried it with different versions. Even with the original firmware it won’t flash. ---
**Author:** ![donvido](https://avatars.discourse-cdn.com/v4/letter/d/a6a055/32.png) [@donvido](https://klipper.discourse.group/u/donvido)\ **Post date:** [November 26, 2024, 2:09pm UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/9 "2024-11-26T14:09:24Z")
![grafik](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/5/5f5da30d35728c9415ab592b353206f9525e0312.png) did you do it according to the anycubic manual? ---
**Author:** ![Der\_Ozzy](https://avatars.discourse-cdn.com/v4/letter/d/97f17d/32.png) [@Der\_Ozzy](https://klipper.discourse.group/u/Der_Ozzy)\ **Post date:** [November 26, 2024, 2:58pm UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/10 "2024-11-26T14:58:21Z")
Yes, I have that but the beep doesn’t come, just the typical sound when switching on and the start animation and then it goes straight to the main menu and even after waiting for a while nothing happens. I don’t know what else I can do, everything works, printing via SD card and controlling it via pronterface also works. And it can’t be flashed via USB either. ---
**Author:** ![hcet14](https://avatars.discourse-cdn.com/v4/letter/h/ecd19e/32.png) [@hcet14](https://klipper.discourse.group/u/hcet14)\ **Post date:** [November 26, 2024, 8:07pm UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/11 "2024-11-26T20:07:11Z")
I fear, you overwrote your bootloader. ---
**Author:** ![Der\_Ozzy](https://avatars.discourse-cdn.com/v4/letter/d/97f17d/32.png) [@Der\_Ozzy](https://klipper.discourse.group/u/Der_Ozzy)\ **Post date:** [November 27, 2024, 2:00pm UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/12 "2024-11-27T14:00:48Z")
_clear_ 235 / 5.000 ## Übersetzungsergebnisse ### Übersetzung Unfortunately, I haven’t found anything about the bootloader on this board, how to repair it or reinstall it, so I’ll probably replace it. Do you have a recommendation for a plug & play version? A simple one is enough. ---
**Author:** ![hcet14](https://avatars.discourse-cdn.com/v4/letter/h/ecd19e/32.png) [@hcet14](https://klipper.discourse.group/u/hcet14)\ **Post date:** [November 27, 2024, 3:38pm UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/13 "2024-11-27T15:38:31Z")
I have absolutely no experience with Huada microcontrollers! I would give something like that [GitHub - shadow578/OpenHC32Boot: experimental bootloader for HC32F460 series MCU](https://github.com/shadow578/OpenHC32Boot) a try. ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\ **Post date:** [January 26, 2025, 3:39pm UTC](https://klipper.discourse.group/t/kobra-2-trigorrila-pro-b-v1-0-2/20202/14 "2025-01-26T15:39:22Z")
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