Buddy Cam Core One Wifi connection failed after update to FW 3.1.2
 
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Buddy Cam Core One Wifi connection failed after update to FW 3.1.2  

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RalfD
(@ralfd-2)
Active Member
Buddy Cam Core One Wifi connection failed after update to FW 3.1.2

Hi,

yesterday there was an firmware update to FW 3.1.2 
Before the update the Camera was working pretty good. No Issues with WiFi connection lost, or anything else.

Now after the update,  the connection to WiFi after startup fails EVERY TIME I start the camera. 
The only way to get the camera work again, is kicking it out of the coupling, press the QR-Scan button, and Re-Connect it to wifi 
by scanning the QR code. Then I have a connection, until the cam gets powered off, and later again powered on.

Is there a way to downgrade the firmware?

Can I make an bug report at Git, or somewhere else?

 

Thx, Ralf

Napsal : 15/11/2025 7:26 am
RalfD
(@ralfd-2)
Active Member
Topic starter answered:
RE: Buddy Cam Core One Wifi connection failed after update to FW 3.1.2

The Quality of the WiFi Signal is @100%, because the access point is about 1,5 meter away from the cam...

Napsal : 15/11/2025 7:37 am
Pomidoor
(@pomidoor)
New Member
RE: Buddy Cam Core One Wifi connection failed after update to FW 3.1.2

Hi, exactly the same problem here. This buddy cam is a joke 🙁

Napsal : 15/11/2025 10:41 am
Pomidoor
(@pomidoor)
New Member
RE: Buddy Cam Core One Wifi connection failed after update to FW 3.1.2

The only thing to do now is to downgrade do 3.1.0, 3.1.1 has some issues with wifi pass char.

This are the steps:

https://connect-ota.prusa3d.com/file/cam-3.1.0.tar

Rename the .tar file to cus_update_ota.tar and copy it on the sd-card.

Make sure the SD-Card is FAT32 formated.

Turn off the camera

Insert the sd-card and turn on the camera again.

Wait till the update completed.

After that remove/rename the firmware file on sd card.

Cheers!

Napsal : 15/11/2025 10:50 am
RalfD
(@ralfd-2)
Active Member
Topic starter answered:
RE: Buddy Cam Core One Wifi connection failed after update to FW 3.1.2

@Pomidoor: not a joke at all, with FW 3.1.1 the Cam was fine. 

Now, after 2hours of printing, no picture is available, but the green status led still blinks slowly.

Napsal : 15/11/2025 11:07 am
Brian
(@brian-20)
Member
RE: Buddy Cam Core One Wifi connection failed after update to FW 3.1.2

Hi 

I got same error after update to 3.1.2, tried with a simple password without special chars. But same issue.

My new Core One L was shiped with 3.1.0 firmware on the Buddy3d. And it connects after power cycle with no problems.

Napsal : 16/11/2025 1:09 am
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