BootMii Configuration Editor by Pembo allows you to modify the BootMii.ini file on the SD card to change the settings, and also to enable/disable or swap BootMii implementations by renaming the directories, without having to bring the SD card over to the PC and edit/change things.
BootMii Configuration Editor v2.5
Changes:
* Updated and compiled against latest libogc (1.8.11) / devkitPPC 26
* Modified auto-update URL