s5570???

Strange ,after repair boot done ,the phone can turn on only samsung logo.
but after full flash bin the phone not turn on .why??

JTAG speed : Auto (RTCK).
VREF level : 2.58 V
CPU : Qualcomm MSM7227T
Core ID : 203C10E1
MI: Loading Medusa Device Server V1.2.
MI: Starting…
MI: Received status 0x0000F00F, cycle 0.
MI: Received server capabilities 0x00000135.
MI: Detailed server caps: FLASH, ECC, WDOG, DWP, IOCTL
MI: Watchdog configuration: 0xB800010C, 0x00000001… ok
MI: Server init.
MI: Received flash ID 0xB0EC0050.
MI: Flash geometry set.
MI: Recheking settings… ok
Server caps : 00000135
Flash device: Samsung OneNAND KFG4GH6Q4M
Flash ID : 00EC0050
Page size : 4096 bytes
Block size : 64 pages (256 Kb)
Block count: 2048
Flash size : 512 Mb
Write protection disabled.
Opening "C:\Users\Jason\Desktop\SAMSUNG_GTS5570_Repair .mf" file…
Writing BOOT section. Please wait… Done
Writing EFS section. Please wait… Done
Writing APPBOOT section. Please wait… Done
Writing UPCH section. Please wait… Done
Repairing IMEI… Done
Disconnecte

JTAG Box Software version 1.9.3
Selected device model: Samsung GT-S5570
Connecting. Please wait…
Checking data…
VREF = 0.0V is less than required level. Please check target device power supply.
Medusa JTAG Firmware version 1.1.0.
Medusa JTAG Hardware S256 revision D.
Detected TAP ID: 203C10E1, IR Length = 4.
JTAG speed : Auto (RTCK).
VREF level : 2.59 V
CPU : Qualcomm MSM7227T
Core ID : 203C10E1
Flash device: Samsung OneNAND KFG4GH6Q4M
Flash ID : 00EC0050
Page size : 4096 bytes
Block size : 64 pages (256 Kb)
Block count: 2048
Flash size : 512 Mb
Write protection disabled.
Connect successful.
ECC Mode enabled.