I can download BB messenger OK
but download my app failure.
I made BB app and using BB desktop to install then it is OK

I try to using OTA but always fails.
907 invalid cod http error 406: not acceptable
but I am sure the cod,jad,jar are in correct location.

I clear cache and set browser is BB but not help much.
am I mssing something? I search google some suggestions that MINE TYPE is not correct but I don't know how to fix.

An other problem

String directoryPath ="file:///SDCard/BlackBerry/pictures/";
FileConnection fconn = (FileConnection) Connector.open(directoryPath);

Always throws an error "File system error 1003"

but
String directoryPath ="file:///SDCard/BlackBerry/security/";
FileConnection fconn = (FileConnection) Connector.open(directoryPath);
f (!fconn.exists()) fconn.mkdir();
fconn.close();
String filePath = "file:///SDCard/BlackBerry/security/security.txt";
fconn = (FileConnection) Connector.open(filePath, Connector.READ_WRITE);
if (!fconn.exists()) fconn.create();

all work fine.

Anybody knows why??