Is any System Flash writable?

[JLesser]

I am using an STM32H743ZI processor and I am confused by an ambiguity in the manual (RM0433). On page 152, the lower table shows two banks of System Flash, bank 1 is 0x1FF00000-0x1FF1FFFF and bank 2 is 0x1FF40000-0x1FF5FFFF. Only bank 1 is marked as "read-only" which perhaps implies that bank 2 is writable.

However, on page 130 of the manual, it shows 0x1FF20000-0x1FFFFFFF (which contains System Flash bank 2) as reserved.

So my question is, does System Flash bank 2 exist on this device, and if so is it writable?

[TDK]

It probably exists, but it's not user writeable.

https://community.st.com/s/question/0D50X0000BbKiXK/stm32h750-system-flash-bank-2