After some firmware testing I managed to get the 2MB Drive garbled.
I can normal boot into DFU, but if I boot the device normally it says “parameter record not found” while booting and it is not possible to save a new parameter set. When I connect the device to the PC, Windows says that the disk is not formatted. I tried to format it, but windows says “Cant finish formatting”. With linux I downloaded Dso.img.zip from seeedstudio.com/wiki/DSO_Qua … g_Firmware and wrote it to the disk, but no luck.
Does someone have an Idea how I can get it working again?