UBCD V5.1 is finally out after a number of test releases. Along with the usual updates, the major change in this version is shifting the FDUBCD boot image and the associated DOS CAB files into its own ISO image, which is then launched using memdisk's CDROM emulation. This helps FDUBCD work on more systems, where previously issues may be encountered on systems with physical CDROM drives that are not supported by the DOS CDROM driver.
Full changelog here:
As usual, you can download the latest version here: