Ich habe gerade mit einem Flashprogramm versucht das handy zu updaten, aber es geht nicht. Es kommt diese meldung:

06/001/2012 19:01:12 - INFO - Connected device : U20
06/001/2012 19:01:12 - INFO - Installed version of busybox : N/A
06/001/2012 19:01:12 - INFO - Android version : 1.6 / kernel version : 2.6.29
06/001/2012 19:01:23 - INFO - Selected SK17i_4.0.2.A.0.62_(1251-0103).ftf
06/001/2012 19:01:23 - INFO - Preparing files for flashing
06/001/2012 19:01:25 - INFO - Please connect your device into flashmode.
06/001/2012 19:01:31 - INFO - Device disconnected
06/001/2012 19:01:53 - INFO - Device connected in flash mode
06/001/2012 19:01:53 - INFO - Opening device for R/W
06/001/2012 19:01:53 - INFO - Reading device information
06/001/2012 19:01:53 - INFO - Phone reading for flashing.
06/001/2012 19:01:53 - INFO - Start Flashing
06/001/2012 19:01:53 - INFO - Flashing loader
06/001/2012 19:01:53 - ERROR - ERR_SEVERITY="MAJOR";ERR_CLASS="SECURITY_CLASS";ERR_DYNAMIC="SIN header verification failed"


HILFE