how to jump from user application to bootloader on STM32l0

[stress]

i want to know how to jump from user application to bootloader.

i know i can do with BOOT0 pin on the datasheet or AN2606.

But i want to know some detail info about the jumping to bootloader.

is there any some info or documents or sample code how to do it?

on my opinion, i think there is 2 options.

1 for jump to directly to bootloader

2 for reset and go into bootloader but i dont know how to do this these things.

[Tesla DeLorean]

>>is there any some info or documents or sample code how to do it?

I think I've posted multiple examples over the years.

Option 2 is my preference, mapping the ROM back at zero, and transferring control to the SP,PC in the front of the ROM's Vector Table.