How to upgrade my Cisco IOS Software

I purchased a Cisco Integrated Services Routers Generation 2 (ISR G2) router on Cisco IOS Software Release 15.0(1)M before the limitation was imposed and I need to upgrade my Cisco IOS Software, how to resolve this problem?
justina chiAsked:
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You will have to purchase a support contract under the new licensing structure.

harbor235 ;}
Garry GlendownConsulting and Network/Security SpecialistCommented:
Your inquiry isn't very precise as to what exactly your problem/requirement is ...
Security updates may be available without SMARTnet support contract, you can contact TAC if there are bugs found that compromise the router ... anyway, you will usually only received a corrected image of the version already installed.
If you need a newer version, harbor235 is correct, except of course that legally one always needed a support contract to receive and install updates on a router.
Your cheapest alternative would be getting a software-only SMARTnet, which apart from the updates also includes full TAC access. Prices for this isn't very high; also, getting a 3-year-contract only costs slightly more than a 2-year contract under the "3-for-2" program.

You will not receive any updates from Cisco without a valid support contract in place regardless if your version is buggy or not. Also, I have never heard of software-only smartnet, can you post a link to the service?. You purchase a support contract for your hardware and you also receive software support. Now there are different levels which typically are more costly the quicker you need your replacement parts.

harbor235 ;}

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Garry GlendownConsulting and Network/Security SpecialistCommented:
@Harbor235: It's "Software Only" as far as it only covers Software updates, but as mentioned also includes TAC, but nothing else (like HW replacement). SMARTnet Code is something like "CON-SW-*" ... anyway, savings (especially for smaller devices like 1941 etc.) won't be very big.

As far as "free updates" for security vulnerabilities goes, quoting from a security advisory:

Customers Without Service Contracts

Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco Technical Assistance Center (TAC):

Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.

So yes, for (some?) cases of vulnerabilities, Cisco will provide free updates, but typically just inside the same release train and version as the customer already has ...
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