Here's the current menu for the MD 3-in-1 Myth. This version features fast SD card recognition - if you don't have an SD card (or using a flash cart without the SD interface), it detects this very fast, so the menu goes to the flash browser almost instantly.
This version also works around a bug in the Neo2 Manager - under some circumstances, the manager doesn't set the run mode correctly when burning games to the flash. The menu will derive a proper run mode in these cases. This mainly affected MD and SMS games with save ram.