Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wb0/STM32WB06/FLASH_CTRL/CONFIG#0x0
CONFIG register
Bit to redirect boot area on SRAM0.
Burst write Control:
Number of wait states to be inserted on Flash read (AHB accesses)
https://github.com/modm-io/cmsis-svd-stm32