Samsung B320 Flashing failed

Here log:

Selected model: B320
Selected com port: COM4
Selected speed port: 921600
Decode *.s3 file - please wait
segments 9
segment 1 20078000 1099596 byte
segment 2 2000C000 20932 byte
segment 3 20058000 56 byte
segment 4 20058138 18440 byte
segment 5 2003803C 36688 byte
segment 6 20000000 100 byte
segment 7 20300000 17055552 byte
segment 8 2001E000 144 byte
segment 9 20016000 4652 byte
Phone must be OFF with battery
Please, connect phone and press shortly power button
Syncing phone... OK
Sending loader 1... OK
Syncing phone... OK
Sending loader 2... OK
Syncing phone... OK
Syncing phone... OK
Flash ID: 010000427E22
Syncing phone... OK
Sending *.s3 file...
bad ask - +ok!
Send s3 - fail
Elapsed time: 88 second, sw ver: 3.5.0040
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any help?