If you're having trouble updating your Kindle, you can visit how to update kindle for a step-by-step guide or you can try a few things Kindle support can do to help.
First, they can make sure your Kindle is connected to the internet and that you have the latest software version. If you're still having trouble, they can try updating your Kindle from a different computer or network.
Kindle support can also help troubleshoot any errors you may be seeing while trying to update your Kindle. They can provide step-by-step instructions on how to fix the problem so you can successfully update your device.
Source: www kindle com support