Not possible to connect to STM32H7 in RDP level 1 through CubeProgrammer without disabling RDP

[Gpeti]

I'm implementing in my firmware on STM32H7 the change of RDP Level.

In RDP Level 1, I can still connect through ST USB bootloader by setting signal BOOT0 (as expected). However when I connect to STM32CubeProgrammer, it asks if I want to disable RDP: it's not possible to access the chip memory without doing a regression to Level 0. I don't understand why: the ref manual says that in RDP 1, the STM32 bootloader from system memory is limited to a few commands but actually it can also modify the option byte to do a regression to level 0 so it is not perfectly clear.

[Piranha]

You are using RDP, but do you know what that RDP abbreviation means?

[Gpeti]

OK you're right, my question was stupid, I was confused by the capability of STM32 bootloader, I edited the answer (since I cannot delete it)