STM32F405 MCU Target not connected via ST link, BUt connecting with USB1 DFU mode ( Bood0 is High), Mass erase command correctly executed.Note: if there's any flash protection, it will not be erased. uable to remove protection. Kindly give your suppo

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ST Technical Moderator

Hello @JMari.11 and welcome to the Community :),

Try "Connect under reset" mode.

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Kaouthar

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