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stm32f401 "accidental" read out protection

Question asked by kovelman.gregory on Apr 27, 2016
Latest reply on Apr 27, 2016 by kovelman.gregory
I have a custom board based with STM32F401 MCU. While programming the board with OpenOCD, it somehow failed and now the board is with ROP.

I'm trying to figure out why the MCU gone to that state. Any ideas why? The software is simple and has nothing to do with ROP nor flashing unlocking.