add opl to fmcb menu

You may also want to copy the newer version of uLE to your FMCB memory card. At that point, you should be able to boot up the hard drive, and use the FMCB menu editor to add OPL and uLE to the main menu. Of course OPL isn't all that useful if you don't have any ISOs installed.

Full Answer

Is there a configurator app for Windows 1250?

There is a preinstalled configurator app but I found that for me is much more convenient to edit this file on PC (and free ~70KiB on MC ;p). So yes, this is simple text file coded in windows1250 with windows end lines.

Does FMCB have a secret?

PS: FMCB have "secret" functionality. If You put on USB file called RESCUE.ELF (any app named by this way), it will be launched on start, before hacked OSDSYS appear. The same with CNF config file, if You put it on USB, it will be used instead the one from Memory Card. It is very handy in tests purpose.