sorry ...didnt work
what i am doing wrong
i installed PocketFileManager4360.xap on my SDcard
then
i installed preview for developers on my sd card
then
i installed DevProgramUI_Release_ARM.xap on my lumia 1520
then
i removed the check-marks "WPSystem" Properties "HIDDEN" and "SYSTEM with PocketFileManager4360
then
i removed the SDcard , put it in my pc and cleared all the files in the {178AC8A1.... (this is the preview for developers app dir)
then
i copied all the files from the {9487C69.... (this is the DevProgramUI_Release_ARM.xap dir) to the preview for developers app dir
then
i put the sd card back in my lumia 1520...
now i CAN NOT start preview for developers any more
AHHH please tell me ...what am i doing wrong here ????
thanks in advance
Michael