Problem with Write to Dashboard

[socrys]

I've try to write Dashboard file to Dashboard om MF668

but this error occurs.

ZTE modems Writing Dashboard ...
Free space : 3407872 Bytes
Dashboard size : 15777792 Bytes

No free space !

so .. i don't know why my free space is only 3407872 Bytes

and how i can clear data for get my free space back.

hope someone help me , many thanks

[Vincentas]

Only way is to find other dashboard file (not as big) and try writing then.