NUCLEO F401RE board shows up as "Unknown device ID! and i can't program the board?

[RGupp]

Communications appears fine; I get the following from BlueNRG-1 ST-LINK Utility (version 2.0.0.0):

ST-LINK SN : 067......

ST-LINK Firmware version: V2J33M25

Conncetd via SWD.

SWD Frequency = 100 KHz.

Connection mode : Connect with Pre-Reset.

Debug in Low Power mode enabled.

Unknown device ID!

Am able to use VL53L1X_ Gui app successfully on same NUCLEO board.

[Tesla DeLorean · Accepted solution]

Perhaps you should get a newer version of the ST-LINK Utilities, current is 4.5.0.0

Where the firmware is blocking access, try connect-under-reset, or pulling BOOT0 High

[RGupp]

Thank you for your help! I really don't know why i had that older version but all is now well!

Regards

Ralph