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ST-link V2 fail to flash to STM32F746 after sometime

Question asked by Phan.Le_Son on Jan 23, 2016
Latest reply on Feb 23, 2016 by kostka.tim
I am using ST-Link V2 to flash to STM32F747, It was successful. However, after sometimes change the code IAR pop-up below warnings:
 Warning: Write failed (CPU data abort) at Memory address 0x2001EF98 
 Warning: Write failed (CPU data abort) at Memory address 0x2001EF84 
 Failed to set breakpoint at 0x200000C4 (out of breakpoints?) 
After that I could not flash the MCU anymore.
Do you know how to troubleshoot this issue?
Thank You!

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