Although developers usually produce upgrades in order to improve a product, there are risks involved—including the possibility that the upgrade will worsen the product.
Upgrades of hardware involve a risk that new hardware will not be compatible with other pieces of hardware in a system.
Upgrading is the process of replacing a product with a newer version of the same product.
In computing and consumer electronics an upgrade is generally a replacement of hardware, software or firmware with a newer or better version, in order to bring the system up to date or to improve its characteristics.
A software or firmware upgrade can be major or minor and the release version code-number increases accordingly.
In commercial software, the minor upgrades (or updates) are generally free, but the major versions must be purchased. Companies usually make software upgrades for the following reasons: 1.) to support industry regulatory requirements 2.) to access emerging technologies with new features, and tools 3.) to meet the demands of changing markets 4.) to continue to receive comprehensive product support.Users can often download software and firmware upgrades from the Internet.Often the download is a patch—it does not contain the new version of the software in its entirety, just the changes that need to be made.Software patches usually aim to improve functionality or solve problems with security.
Rushed patches can cause more harm than good and are therefore sometimes regarded Patches are generally free.
For example, an upgrade of RAM may not be compatible with existing RAM in a computer.