1. First verify your firmware and your IOS are loaded into the bootflash by executing the following:
a. #dir
2. Once you verified you have the proper files (if you do not, download the correct ones and follow my “Uploading IOS” guide), enter the following commands in order to keep the system from booting into the old IOS. We will do this to force it into the new firmware and IOS files:
a. #configure terminal
b. #no boot system flash bootflash:YourCurrentLoadedIOS
c. #exit
d. #write
3. Next we are actually going to set the config-register and set the device up to load and boot from the files we uploaded into our flash.
a. #configure terminal
b. #boot system flash bootflash:YourFirmwareUpgradeFileName
c. #boot system flash bootflash:YourCiscoIOSFileName
d. #config-register 0x2102
e. #exit
f. #write
4. Now you need to verify your boot parameters are correct and the system will boot up into your files you want to load:
a. #show bootvar
b. Look to make sure your BOOT variable is equal to your boot software you wish to boot. ENSURE you check this because I have had where it would load the files out of order, or not put one in. Just verify.
5. Next you just need to reload the Cisco device and it should start performing the upgrade. It will take up to 5-20 minutes.
a. #reload
b. Proceed with reload? Confirm
c. Not to self and others, sometimes these switches will get stuck and might need to be power cycled. Have a console cable ready just in case troubleshooting is required to get it to boot back up.
6. Once the switch has loaded up, verify your software has been upgraded with:
a. #show version
7. Next, you need to reset your boot parameters to only load the new IOS and not the firmware file and change back the config-register for proper boot functionality and order:
a. #configure terminal
b. #no boot system flash bootflash:YourFirmwareFile
c. #config-register 0x0102
d. #exit
e. #write
8. Finally, you can clean up the files on the system by using the delete command to delete the firmware file. If you have the space and even though you backed up your IOS (you did backup your IOS right?.....), you might still want to keep the old IOS on there just in case you have issues.
a. #delete bootflash:YourFirmwareFileName
b. Delete filename? Confirm
9. You have now completed the firmware and IOS upgrade for your system.
Reference:
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/release/note/OL_24829.html#96288
a. #dir
2. Once you verified you have the proper files (if you do not, download the correct ones and follow my “Uploading IOS” guide), enter the following commands in order to keep the system from booting into the old IOS. We will do this to force it into the new firmware and IOS files:
a. #configure terminal
b. #no boot system flash bootflash:YourCurrentLoadedIOS
c. #exit
d. #write
3. Next we are actually going to set the config-register and set the device up to load and boot from the files we uploaded into our flash.
a. #configure terminal
b. #boot system flash bootflash:YourFirmwareUpgradeFileName
c. #boot system flash bootflash:YourCiscoIOSFileName
d. #config-register 0x2102
e. #exit
f. #write
4. Now you need to verify your boot parameters are correct and the system will boot up into your files you want to load:
a. #show bootvar
b. Look to make sure your BOOT variable is equal to your boot software you wish to boot. ENSURE you check this because I have had where it would load the files out of order, or not put one in. Just verify.
5. Next you just need to reload the Cisco device and it should start performing the upgrade. It will take up to 5-20 minutes.
a. #reload
b. Proceed with reload? Confirm
c. Not to self and others, sometimes these switches will get stuck and might need to be power cycled. Have a console cable ready just in case troubleshooting is required to get it to boot back up.
6. Once the switch has loaded up, verify your software has been upgraded with:
a. #show version
7. Next, you need to reset your boot parameters to only load the new IOS and not the firmware file and change back the config-register for proper boot functionality and order:
a. #configure terminal
b. #no boot system flash bootflash:YourFirmwareFile
c. #config-register 0x0102
d. #exit
e. #write
8. Finally, you can clean up the files on the system by using the delete command to delete the firmware file. If you have the space and even though you backed up your IOS (you did backup your IOS right?.....), you might still want to keep the old IOS on there just in case you have issues.
a. #delete bootflash:YourFirmwareFileName
b. Delete filename? Confirm
9. You have now completed the firmware and IOS upgrade for your system.
Reference:
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/release/note/OL_24829.html#96288
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