All fonts encoder for OS 5.0 - 7.x simply use cod Latin font Truetype only #FreeMemory
Deficiency if use font encoder in os 5.0 and 6.0. Writings black box at CJK(Chinese, Japanese, Korean) and your enough install Font cod Global Type and Japanese Droid.
Before your extract your must show hidden. Copy and Paste into the path /store/Appdata/Rim/ or /Device Memory/Appdata/Rim/
And then reboot your BlackBerry

appkita.com

if u have any question, please just coment hêre, in english language of course :P