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+Too many of Proteus 0.6 with F767 are behaving strangely in terms of initial programming. Maybe we have a hardware design issue? Maybe we are missing something?
+
+Anyway looks like there is a working procedure.
+
+1) use STM32CubeProgrammer software https://www.st.com/en/development-tools/stm32cubeprog.html
+
+2) connect via USB while holding PROG button
+
+3) make sure you have "STM32 BOOTLOADER" driver not "STM Device in DFU Mode". If necessary update/install driver from C:\Program Files\STMicroelectronics\STM32Cube\STM32CubeProgrammer\Drivers\DFU_Driver
+
+4) connect STM32CubeProgrammer via USB, follow https://github.com/rusefi/rusefi/wiki/HOWTO-nDBANK to reset nDBANK flag
+
+5) close STM32CubeProgrammer, unplug USB cable, plug USB cable, open STM32CubeProgrammer. STM32CubeProgrammer is finicky you really have to restart it between steps
+
+6) 
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