RE: JR XG8 Update failure
In the US, many stores offer a type of insurance (extra cost) that will replace a failed electronic device on an exchange basis, as long as the device is still available.
Having said that, many electronic "toys" come from places like China. Without the extra cost insurance, they may be considered throwaway.
Things like smaller counter top microwave ovens and even LCD displays and TVs are also in this category.
A couple of years ago, I had a Phillips CRT based large screen (for CRTs) HDTV fail. The HV section was in obvious trouble.
The estimated out of warrenty repair cost was as much as I paid for the TV, mostly labor. It was replaced with a larger LCD TV
Shipping costs to send the Phillips to the repair center were also very high.