Have developed flash lite application, that get photo from camera and upload it to server involving APIBridge. *.swf file work fine if it is located c:/Other/Trusted. But it does not work if *.swf file is located in some other places. The problem is with uploading picture or video file from phone to the server. This problem exists for different models of phones (tested on 5800 (v50.0.005) and 5530 v10.0.050). Note that one can get foto or video since API bridge in this case works fine.
When one install application via widget (in our case packed *.swf inside html) there is no this problem for a few first uploads if the applicaton was not installed before. After that problrm arises and even master reset can not cancel it. The problem is marked by 404 error.
Seems that there is some security feature which block this uploading
Because at the point of uploading there is no request from phone to the server, but requests from flash lite application to server work fine.