Serg008 / NoJuan999, I've tested the 804' BIOS. Flashed fine, but too old ;-( ALso flashed 629' BIOS. That'S it now. Working like a charm. Thanks again for your great support. One Tipp: I had some challenges to flash the filename: 78DAA629_SLIC.BST as is too long for DOS. I prepared a batch file under Windows with all the flash parameters and included the filename. DOS then transfers the filename into 78DAA6~.BST which is not what I told my batchfile. Renaming the file into 629_SLIC.BST and update of the batchfile solved it. That's obvious for you guys, but maybe not for normal users who don't know DOS (it's a long time ago that I worked with Dr.DOS ;-) All the Best myhtpc