Custom Firmware for Third party device

[ircbloqcc]

is it possible to Download the custom firmware to third party device?
Because i have a designed a board based on Arduino UNO but i want to customize the Firmware and also want to create a custom extension to support in realtime mode. is it possible?
I tried with OB, But i cant figure it out.

[zhengyangliu]

This function is not available at present, but will be added in a later version。

[ircbloqcc]

Is there any update regarding this feature?

[zhengyangliu]

Is there any update regarding this feature?

At present, it can only be implemented by modifying the source code. At present, this function will not be implemented in the short term.