Just did this today due to the same prompt. I used hyperterm for the term emulation. I found the info in the 3750 Switch Software Configuration Guide - Recovering from Corrupted Software By Using the Xmodem Protocol. Very slow but went well.
Step 3 Connect your PC with terminal-emulation software supporting the Xmodem Protocol to the switch console port.
Step 4 Set the line speed on the emulation software to 9600 baud.
Step 5 Unplug the switch power cord.
Step 6 Press the Mode button, and at the same time, reconnect the power cord to the switch.
You can release the Mode button a second or two after the LED above port 1 goes off. Several lines of information about the software appear along with instructions:
The system has been interrupted prior to initializing the flash file system. The following
commands will initialize the flash file system, and finish loading the operating system
Step 7 Initialize the flash file system:
Step 8 If you had set the console port speed to anything other than 9600, it has been reset to that particular speed. Change the emulation software line speed to match that of the switch console port.
Step 9 Load any helper files:
Step 10 Start the file transfer by using the Xmodem protocol.
switch: copy xmodem: flash:image_filename.bin
Step 11 After the Xmodem request appears, use the appropriate command on the terminal-emulation software to start the transfer and to copy the software image into flash memory.
Step 12 Boot the newly downloaded Cisco IOS image.
Step 13 Use the archive download-sw privileged EXEC command to download the software image to the switch or to the switch stack.
Step 14 Use the reload privileged EXEC command to restart the switch and to verify that the new software image is operating properly.
Step 15 Delete the flash:image_filename.bin file from the switch.
If you do need to load flash via a console cable, you might check whether the console port can be configured faster than 9600 and/or whether there's a faster terminal file transfer protocol that's available.
Loading via xmodem is slow and not 100% reliable. About 1 in 4 loads seem to be bad and I end up having to copy again. Not my favorite activity. The easiest thing to do is set it up and don't even look at it for several hours.
Also, make sure your computer won't go to sleep during the transfer.
Thanks. I've the doc, tried the steps and got up to step 10. I got an error message during the xmodem transfer, "I/O error". What does that signify? That is the point I've been stuck in since yesterday.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...