ST-LINK_CLI.exe Family device :Unknown device

[MP??r]

Hello there,

I am trying to connect to a stm32F091 mcu through st-link_cli. The problem appears when the CLI cannot recognice the device, but when I use the STM32 ST-Link Utility (the one with GUI) there are no problem in find the device. Anyone could help me?

This is what i am writing in cmd

And this is what i get with the GUI:

[MP??r]

Okey seems to not appear the image i attach so i write it by myself:

"This is what i am writing in cmd"

$PATH\ST-LINK_CLI.exe -c SWD

STM32 ST-LINK_CLI v1.2

STM32 ST-LINK Command Line Interface

Connected via SWD

Device ID:0x442

Device Family: Unknown device

"And this is what i get with the GUI:"

13:05:41 : ST-LINK SN : 48FF77067266535206261867

13:05:41 : ST-LINK Firmware version : V2J32S7

13:05:41 : Connected via SWD.

13:05:41 : Connection mode : Normal.

13:05:41 : Debug in Low Power mode enabled.

13:05:42 : Device ID:0x442 

13:05:42 : Device flash Size : 256KBytes

13:05:42 : Device family :STM32F09xx

thank you every one