Got a little of success here, if I bypass the whole loop with a jumper wire while probing, the board get the connection and is going to the next step
That means the issue is in the wiring between 3.3v out of the board "probe" port after the pullup resistor AND before board probe input
Must be something with heat or vibration as the loop was "good" with ohmeter
Thanks for your help, I'll keep you posted