how to do Dual boot in stm32l476rg?

[Ngaur]

Hello,

I am wanting to do flash via dual boot option on a STM32L476RG board using an external board NUCLEO- L476. when I am trying to change the option bit via program but it wouldn't work any more. while

I have tried a lot so please provide me solution to do flash via dual boot. if there is any api are there related to this.

Can someone guide me on how I might fix this problem?

Thanks & Regard

Nikhil Singh Gaur