Hi, just upgraded a f429zi board to fw 2.J37 (in st-link utility v4.6.0 I just downloaded) , and the board won't boot anymore pin2dmd firmware without pushing reset button. LD3 board led won't light. Tried with older pin2dmd firmware 3.15, 3.17, 3.19 and same issue. If powered with usb power connector the display boot fine. Fortunately I tried to install again utility v4.3.0 with V2.J32 fw and I was able to downgrade board. All ok again with old version. So don't upgrade ST firmware to last version, keep V2.J29 or V2.J32.