Custom application for thingy 52

[Dash]

Can thingy52 be programed OTA with an application I compiled without reprogramming the bootloader. Can the bootloader be programed OTA?

[Hung Bui]

Hi Dash,

The bootloader on the Thingy only works with our private key. If you want to use the bootloader to OTA DFU your own application, you would need to replace the bootloader with a new one compile with your own private key.

You can't replace the original bootloader using OTA (because of the key). What you need to do is to erase the chip and flash the application/bootloader manually using debugger interface (SWD).

This is what we recommend also when you develop your application, you should erase the bootloader and flash your application directly instead of OTA.