Error while flashing

Toniebox Hardware ESP32 (V4)
1

Hi everybody,

i am currently trying to setup the teddycloud an flashing the new FW on the device. After struggeling to get a good connection with the uart Clamp, i solderd pins to the board. Now the connection with the ftdi board is very stable. I am using the guided ESP32 installing helper. After reading the Flash i enter the IP of the teddycloud and the wifi credentials, but when i hit the blue flash button, I get the following Error:

[INFO] 2026-02-18 14:33:51 [ESP32] patchFlash: start {"filename":"ESP32_24587cc67588_5.bin","hostname":"192.168.10.7","previousHostname":"","flagPreviousHostname":false,"wifi":{"ssid":"***","pass":"***"}}
[INFO] 2026-02-18 14:33:51 [ESP32] patchFlash: request {"url":"/api/hassio_ingress/X7mMmA5qM0EbUYM4HftqMkXbv80TO-d2-zMX0jcmg7s/api/esp32/patchFirmware?filename=ESP32_24587cc67588_5.bin&hostname=192.168.10.7&wifi_ssid=404-Network%20not%20found&wifi_pass=********"}
[ERROR] 2026-02-18 14:33:51 [ESP32] patchFlash: exception {"name":"ResponseError","response":{}}
[INFO] 2026-02-18 14:33:51 [ESP32] patchFlash: finished

Can anyone give me a hint, what am i doing wrong or how to continue?

thank you very much

2

It’s an ha problem.

3

Thanks for your Reply, how do you know?

Does this mean I won’t get any Help here?

Would it be possible, to host another instance of Teddycloud to patch it and configure the HA - HostIP?

4

You are not the first one reporting that. The uploading of the read flash fails because of some ha restriction or whatever.

Yes you can use another (temporary) teddycloud instance if you ensure it has the same server certs. Then do the flashing with that instance, flash the correct ip or hostname of the ha instance and it should work.

5

Thank you for your Information, that sounds like a Plan to me. As I am new to this, can you tell me how to ensure, to have the same Server Certs? I seem not be able to download them from the TC hosted on Home Assistant.

Or is there a chance to brick it? Otherwise I would just try it out.

6

You need to copy the certs from your ha teddycloud.

They are unique for each instance.

How you can access them? Don’t know, not using ha.

7

I installes a fresh ‘standalone’ Instance of TeddyCloud and the flashing Process worked just fine!