When Cisco 3560 switch have blinked SYST mode at startup, maybe that is gone flash IOS image
then you should fellow step like this
1. Down load putty at http://www.extraputty.com/snapshots/Download/thanksputty.html
putty.zip2. Do execute extraputty.
3. Category>Session | click Serial in Connection type
4. Click open button
5. Push menu button when you do plugin
switch: flash_init
switch: set BAUS 115200
switch: set BAUE 115200
switch: set BAUD 115200
6. Disconnect extraputty
7. Reconnect extraputty after change baud values as 115200 in Catatory>Connection>Serial>Speed(baud) 115200
8. You do this fellow steps
c3560-ipservices-mz.122-25.SEB4.bin
switch: copy xmodem: flash:c3560-ipservices-mz.122-25.SEB4.bin
switch> copy flash:c3560-ipservices-mz.122-25.SEB4.bin flash:/c3560-ipservices-mz.122-25.SEB4/c3560-ipservices-mz.122-25.SEB4.bin
switch: set BOOT flash:/c3560-ipservices-mz.122-25.SEB4/c3560-ipservices-mz.122-25.SEB4.bin
switch: boot flash:/c3560-ipservices-mz.122-25.SEB4/c3560-ipservices-mz.122-25.SEB4.bin
switch: copy flash:c3560-ipservices-mz.122-25.SEB4.bin flash:/c3560-ipservices-mz.120-ipservices-mz.122-25.SEB4.bin
(File "flash:c3560-ipservices-mz.122-25.SEB4.bin" successfully copied to "flash:/c356z.122-25.SEB4/c3560-ipservices-mz.122-25.SEB4.bin"
)
switch: boot flash:/c3560-ipservices-mz.122-25.SEB4/c3560-ipservices-mz.122-25.SEB4.bin
(Loading "flash:/c3560-ipservices-mz.122-25.SEB4/c3560-ipservices-mz.122-25.SEB4.bin"...@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@)
Switch#sh ver
00:01:42: %LINK-5-CHANGED: Interface Vlan1, changed state to administratively down
Cisco IOS Software, C3560 Software (C3560-IPSERVICES-M), Version 12.2(25)SEB4, RELEASE SOFTWc1)
Copyright (c) 1986-2005 by Cisco Systems, Inc.
Compiled Tue 30-Aug-05 14:19 by yenanh
ROM: Bootstrap program is C3560 boot loader
BOOTLDR: C3560 Boot Loader (C3560-HBOOT-M) Version 12.2(44)SE5, RELEASE SOFTWARE (fc1)
Switch uptime is 1 minute
System returned to ROM by power-on
System image file is "flash:/c3560-ipservices-mz.122-25.SEB4/c3560-ipservices-mz.122-25.SEB4
cisco WS-C3560-24TS (PowerPC405) processor (revision D0) with 118784K/12280K bytes of memory
Processor board ID CAT0939Z1FL
Last reset from power-on
1 Virtual Ethernet interface
24 FastEthernet interfaces
2 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.
512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:15:C6:4B:48:80
Motherboard assembly number : 73-9897-05
Power supply part number : 341-0097-02
Motherboard serial number : CAT093915CW
Power supply serial number : DCA09310MK0
Model revision number : D0
Motherboard revision number : A0
Model number : WS-C3560-24TS-S
System serial number : CAT0939Z1FL
Top Assembly Part Number : 800-26160-02
Top Assembly Revision Number : B0
Version ID : V02
CLEI Code Number : COMMG00ARB
Hardware Board Revision Number : 0x01
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 26 WS-C3560-24TS 12.2(25)SEB4 C3560-IPSERVICES-M
Configuration register is 0xF
Switch#
Switch#sh boot
BOOT path-list : flash:c3560-ipbasek9-mz.122-55.SE6/c3560-ipbasek9-mz.122-55.SE6.bin
Config file : flash:/config.text
Private Config file : flash:/private-config.text
Enable Break : no
Manual Boot : no
HELPER path-list :
Auto upgrade : yes