Enter STM32 native bootloader from my application.

Hello everyone.

I've been trying to activate the STM32 native bootloader in a STML082CZ, which is connected in my application's main microcontroller via USART. Anyway, the BOOT0 pin of STML082CZ uC is grounded in my PCB.

Once it's mandatory to set the BOOT0 pin and the nBOOT1 bit to High, is there a way to do this by code? It's my first time programming for a bootloader, and I still don't know how to switch the nBOOT1 to high.

Any clue would be highly appreciated.

Thank you so much.