Hi Karl, using your cloned st-vlink2 debugger try connecting with mode: under reset and hold reset before connect, then right after clicking connect release the reset button. Missing of timing will not connect your stlink with stm32cubeprogrammer in under reset mode. Because using the cloned stvlink2 debugger in normal mode it did not get connected, no matter what, but it wasn’t the case when I tried with my onboard debugger in Nucleo 446RE where it got connected, and even data read was successful but couldn’t load my hex file onto the flash.