HOW TO WRİTE NEW MCU STM32P301VCT6MBM WİTH ST LİNK V2

I SOLDERED A NEW MCU AND WROTE THE FLASH FILE WITH ST LINK UTILITY
THE PROGRAM TİME IS COMING ON THE PANEL BUT THERE IS NO REACTION
I HAVE READ IT BEFORE GOOD BOARD MCU
READ ADDRESS
0x0800 0000
SİZE
0x3FFF0
I WRİTE NEW MCU START ADDRESS 0x08000000