Updating kindle account
If your Kindle is linked to your Amazon account ,simply log into your Amazon Content and Devices dashboard and click on the “Your Devices” tab.Select the Kindle you want to update and read the notation beside it, like so: In the case of the Kindle I’m interested in updating today, the first four characters of the serial number are B0D4.If you missed the March 22 deadline to get an over-the-air update, you'll have to update your device manually. For users who stay connected to Wi-Fi, the update may have already installed.You can find out if your Kindle is on the latest version by going to Menu "Your Kindle is unable to connect at this time.If you've made significant corrections to errors, you can ask us to make the updates available to customers who have older versions of your book.If you’ve recently encountered an issue connecting your Kindle e-reader wirelessly, or if you’re having trouble accessing the Kindle Store, you may need to update the software on your device.: Updating Credit Card Information Whenever you change your payment information, you need to remember to update each of your subscriptions, as well.
Customers who buy your book after you republish will receive the updates.
You can also find the serial number by turning your Kindle on and looking in the Settings Device Info menu.