I tried to use external ST-LINK V2 with evaluation board STM32F469NI. I connected it to the connector CN16, disconnect USB from CN22 and used ST-LINK utility. But connection to target MCU was failed. I think that the problem was that I din't dis-activate ST-LINK v2-1 on board. But it was no instruction in user manual about this issue. Please, advice.
The problem was in board malfunction. We tried another eval STM32F469I and connection was O.K.
So it is possible to use ST-LINK V2 on this board.