this new *.HEX file. It worked. I downloaded it. opened in STMCUBE. I managed to upload it again in the arduino IDE. But there is no response to the command: : GVP #
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STM32CubeProgrammer v2.8.0
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USB speed : Full Speed (12MBit/s)
Manuf. ID : STMicroelectronics
Product ID : STM32 BOOTLOADER
SN : STM32FxSTM32
FW version : 0x011a
Device ID : 0x0421
Device name : STM32F446xx
Flash size : 512 KBytes (default)
Device type : MCU
Device CPU : Cortex-M4
Memory Programming ...
Opening and parsing file: OnStep.ino.bin
File : OnStep.ino.bin
Size : 188956 Bytes
Address : 0x08010000
Erasing memory corresponding to segment 0:
Erasing internal memory sectors [4 5]
erasing sector 0004 @: 0x08010000 done
erasing sector 0005 @: 0x08020000 done
Download in Progress:
File download complete
Time elapsed during download operation: 00:00:10.645
RUNNING Program ...
Address: : 0x8000000
Start operation achieved successfully
