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MCBSTR9 : Cannot load flash programming algorithm

Hi all,

I've downloaded with ULINK2 a "blinky" modified project (only replace the direct register access by ST library functions for Timer3 and Vic configuration).
Program does not work anymore (STR9 seems to be freezed in undefined state) and when I try to erase or program, I have the "Cannot load flash programming algorithm" error.
I've tried all frequencies, I've tried the "reset method" (power on the board with STR9 in reset and then try an erase), the RAM parameters are OK (0x4000000 and 0x800), The algorithm are the default blinky project one and was working before that freeze, etc..
Is there any other meaning to erase the chip and continue my work on this board ??

Thank for advance,
Steph.