I am getting error while trying to upgrade the IOS of Cisco 3560 switch.Please find the attached screen shot for the error message and show version command output.We have total 7 3560 switch and I am getting the same problem for all.I have used the same TFTP server for up gradation of both firewall and router and I didn't get any error.
Please help to resolve it..
It looks like you don't have problem with swithes.This problem seems to be with your TFTP application.
Try any of the following steps.
1)Please reboot your computer and then start the TFTP application and try to upgrade the IOS....it should work now..if not go to next step.
2)Re Install the TFTP application and follow step 1
3)Or you can download the Free Solarwind TFTP application http://www.solarwinds.com/products/freetools/free_tftp_server.aspx and use it to upgarde the IOS.
Cheers (rate it if it helped you to resolve the issue)