Change Vector Table in cortex M4 in a persistent way

Hello,

I need to change the Vector Table but I need it to be persistent through a reset, what I'm trying to do is set a vector table duplicate as a safety measurement for reprogramming the original vector table.

So far I being playing with the VTOR register but it seem that it return to 0 when a reset occurs.

am I messing something?

Regards.

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