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STM32F4 Bootloader pins connection problem (AN2606)?

Question asked by mudrov.tsvetan on Sep 24, 2013
Latest reply on Sep 24, 2013 by Clive One
I'm using STM32F405RG. In my application we plan to use bootloader on USART1 for firmware programming. In AN2606 page 74 is written, that the rest of bootloader channels (USART3, CAN and OTG) inputs must be put in definitive state. But how to do this for USB DM, DP pins?

I cannot connect PA10/PA11 with pull ups or pull downs, because this is now allowed by the USB specification. I need USB connection, but I want to use USART1 bootloader.

What is the solution in this case?