Due to design variations and chipset capabilities, these decisions by manufacturers can result in not every SDHC device universally supporting the Class 10 specification. We have discovered through testing and customer feedback that some devices can be/may require an update to your device’s firmware (which can be obtained by contacting the device manufacturer to find out how this is accomplished).
In our experience, customers sometimes are looking to simply increase the size of the storage capability for their device in order to hold more data. For these kinds of situations, we have found that using a Class 4 card (instead of Class 10) in the larger size fixed the device’s compatibility issue with a Class 10 card, allowing greater storage capacity without having to go through the process of updating device firmware (which can be a little difficult for the average user at times). In this case, return the Class 10 SDHC card for a full refund to the place of purchase and pick up a Wintec Class 4 SDHC card.
Note: It may be that some devices are unable to be updated (your manufacturer will know for sure) which means that using a Class 4 card would become the primary solution to try for increasing the storage capacity to your device.