There is 2 Ways you can recover device in ROMMON Mode.
1. XMODEM
2. TFTP
XMODEM :
Issue the following commands:
1) flash_init
2) load_helper
Next you need to change the baud rate on the switch, otherwise it will take about 2 hours to transfer the IOS via xmodem.
3) set BAUD 115200
After you issue the baud rate command on the switch make sure you also change it in Hyperterminal or whatever software terminal emulation software you use. Otherwise you won't be able to communicate to the switch.
4) copy xmodem:"image_filename.bin" flash:"image_filename.bin"
5) In Hyperterminal select "Transfer" and select "send file". Change the protocol to xmodem. Next select browse and navigate to where you have stored the IOS that you would like to transfer to the switch. Click send.
The transfer will take about 30-40 minutes.
6)boot flash:"image_filename.bin"
The new IOS should boot at this point. If you need more in depth instructions check out this link.
http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_44_se/configuration/guide/swtrbl.html#wp1099467
TFTP : ( you should have TFTP Server running on your PC - change the IP address as per your environment) - make sure you put the .bin file Root folder of TFTP.
switch: IP_ADDRESS=192.168.1.1
switch: IP_SUBNET_MASK=255.255.255.0
switch: TFTP_SERVER=192.168.1.2
switch: TFTP_FILE=c3550-ipservicesk9-mz.122-35.SE5.bin
switch: DEFAULT_GATEWAY=192.168.1.1
switch: set
BOOT=tftp://192.168.1.2/c3550-ipservicesk9-mz.122-35.SE5.bin
DEFAULT_GATEWAY=192.168.1.1
IP_ADDRESS=192.168.1.1
IP_SUBNET_MASK=255.255.255.0
TFTP_FILE=c3550-ipservicesk9-mz.122-35.SE5.bin
TFTP_SERVER=192.168.1.2
switch: boot tftp://192.168.1.2/c3550-ipservicesk9-mz.122-35.SE5.bin
Once booted, copy the .bin file to flash, and set the boot variable :
boot system flash:/c3560-ipbasek9-mz.122-35.SE5.bin ( example)
wr and reload and let us know.
Good video if you intrested to Look
https://www.youtube.com/watch?v=bkKp-PyAMKg
