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Problem when flashing a new microcontroller with ST Flash loader demonstrator

Question asked by bernard.thomas on Mar 19, 2013
Latest reply on Mar 20, 2013 by bernard.thomas
I have a problem with ST flash loader demonstrator when I try to flash for the first time a STM32F207IG.
I use UART1 and BOOT0 pins. ST flash loader detects correctly the microcontroller, and starts the erase process. But after a few seconds, the process stops and an error occurs.
After that the microcontroller is totally blocked, and the only way to flash it is to use JTAG or SWD.
Do you have any idea about the cause of this behavior ?
Thank you in advance for your help.