Dear All
as mentioned before I closely followed discussion from the early beginning. These days I've got my F30BT and hacked it sucessfully
. Many many thanks to condi (and all coworkers) 

! Hack was very easy and worked as described. Really Well Done!!! The biggest challenge (as promised by condi) is navigating in the Pioneer Service Mode and in FILE MAINTENANCE.
The previous device I hacked was a Medion Navi P5430 win WINCE 5.0.
There I have installed on a SD card a programm collection called MioPocket 3.0. SD card was inserted to F30BT and I checked all .exe-files. Please find the details in the attachement.
As a short summary:
most of programs that started correctly can open the FileMenu, but can not continue with FileOpen or FileSave! Same situation for keyboard input. JOTKBD.exe started and menu actions work well, but no characters are written to an input line of any program!
Seems that something general is missing!
Any idea whats missing and how to overcome?
Nevertheless some lucky surprises occured:
TCPMP, open pictures, videos and music with his own browser and displays them, unfourtunally music is not submitted to speakers, but picture show works well
Calc98CE, works with integrated keyboard, therefore input and calculations are working well!
FoxitReader, registers himself during program start. After that any PDF will open with a doubleclick in Foxit and can be read easily
GQ Viewer, open pictures with his own browser and displays them, also zoom and scroll
Rotate.exe, rotates screen correctly (not really useful but it works!)
uBook, books are loaded with integrated browser, unfourtunally it starts up in the upright mode, not really comfortable for reading, but it works
Ppaint.exe, drawing mode is working fine, character input and Load/Store is missing (similar for other paint programs)
RegEdit, displays Registry correctly, but no Import or Export (similar for other RegEditors)
In general I found the results worth to report, maybe helpful for some and motivation for others to overcome remaining challanges!
Looking forward to your comments
Bernd
PS: is it normal that Pioneer Software supplied by condis hackmode is not starting ?
F30BT Programmstatus.xls