How to use BOOTLOADER functions outside of BOOTLOADER

[ThomasSt]

Hi all

I want to use Bootloader functions outside of the bootloader, means I want to use the function
bootloader_load_image_no_verify() in another application.

How can I do that?

I found out that I have to define the BOOTLOADER_BUILD macro.
Then I had to fix some linker problems.
Now my application aborts during startup in the do_multicore_settings() function.

[ESP_Sprite]

You can't. Specifically that function will (iirc) reconfigure the memory mapping, and your application is using that. It probably also wants to reconfigure memory protection, and that's generally locked until a reset. Suggest you reboot the app into the bootloader instead, then add whatever functionality you require to said bootloader.