Galaxy s III spd dead

Hello

I have one galaxy s III spd dead by reset function in Volcano v1.7.0
Flash with backup can't repair.
Format can't repair.
Help!

Internal version: SPRD3
Boot downloaded.
Start boot please wait a moment....
Spreadtrum Boot Block version 1.2
CPU TYPE:SC6530 [65300000]
FLASH ID: 00C8006000170000
Flash Type:[GD] 25LG64bWL
Size:0x800000(8MB)