Upgrading Magento is an easy task if you are using clean installation, free of any extensions or customized themes - follow the Magento wiki guide or refer to the Magento support team and this is pretty much it.
However, no Magento store owner probably ever felt content of the clean Magento installation. In case the store is third party extensions heavy or utilizes responsive custom design upgrading Magento to the latest/required version can be a difficult task.
If you or your developer feel that you do not have required experience migrating/updating to the required Magento version, we strongly advise to refer to the Magento development companies to make sure that once the updating process is over store functions properly. As an option you may consider first migrating the development store to try the instructions out.
Or you can always ask our help desk team by submitting a help desk ticket to assist you with the Magento upgrade.
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