Build zephyr os and mcuboot

[Umamahesh]

I have  nrf54l15dk eval kit, I wanted to build mcuboot and zephyr OS  using nRF Connect SDK or Visual Studio separately. Can you suggest the procedure and how do I get full access to the code

[Turbo J]

BTDT. TL;DR - its a bad idea.

You can't build nor flash zephyr separate from the application. Its statically linked in app binary.

MCUBoot and APP need to agree on the flash layout. Sysbuild will ensure this by default.

Also note that default mcuboot config can't do anything useful without an application present. Serial recovery is disabled by default AFAIK.