bs11 not working

hi my 2nd bs11 doesnt work. the boot screen from bs11_config looks like this(attached pic). both boot screens look like that, the operational one too. the 2 bs11 are connected identical, the software is the same. one works, the other doesnt. bad! the bootstrapping works on both, but the handy can only detect the one of two bs11. troubleshooting advices are welcome, openbsc website was no help T. -- Wer Rechtschreibfehler findet, darf sie behalten!