I have an STM32F407 board and have worked out how to flash a certain flash-sector as well as erasing it. My problem is that whenever I have written to flash, and I reboot my board, I cannot flash again until I reflash the entire programme from STM32C...

I am not too familiar with embedded systems and just started learning about them. I have some parameters that lives in their own flash sector (16KB). They are stored as one long string ("PARAM1=X\r\nPARAM2=Y\r\n...." and so on). One of the parameters...