1) I have a 1720 Cisco Router
2) I have copied the IOS (Flash) from the router to the PC through tftp server
-The connection between the router and the PC: using the cross-over cable
-The IP address of the Ethernet of the router is " 192.168.254.1 255.255.255.0 "
- The IP address of the PC is "192.168.254.2/24" (same subnet)
-The file name of the flash: c1700-sy-mz.121-27b.bin (this file is now at C:\TFTP-Root\c1700-sy-mz.121-27b.bin at the PC)
3)My Goal: I want to copy back this IOS back to the Router
4) My questions: FIRST: Before i could copy back the ios to the router; i believe i should delete the IOS firstly; how do DELETE this IOS from the Router? (Pls provide the Command to do it), SECOND: To copy back the IOS (from tftp server) to the router, someone says use "Copy tftp flash"; i am confused here; if we have deleted the IOS from the router; i believe i could not TELNET anymore the router from the PC, right? and If i could not TELNET the Router from the PC, i could not EXECUTE the above command "Copy tftp flash"
5) Any Help?
6) Thank you