Hello, Thanks for your valuable reply. I understand it. I have query regarding last question "The factory preprogrammed BSL uses password to unlock most of the BSL function. Without that you can only do a Mass Erase, or enter password. For a Customized BSL, theoretically you can do whatever you like. I do not understand the last part of your question." that means, Before BSL write we need to unlock it and then write the binary TXT on it and then it is lock again. In our scenario i wil follow: 1> write TXT binary file on eeporm after updated new TXT file make logic for binary new availble 2> then we check the update TXT file logic is ok. if it is ok then follow ---> open BSL area ---> write TXT binary on this flash area ---> at the end of the TXT binary write then it will lock again ---> at the end restart the mcu by logically Is is ok ? if any mi-stack please guide me ....
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