If you have this thought in mind, please make sure that your Kindle Serial Number is suited with the specific firmware before downgrading your Kindle device. I have heard that many people want to downgrade their Kindle firmware for all kinds of reasons. But if we know the Kindle Serial Number, we can contact Amazon Customer Service to mark our Kindle as lost and it's even possible for us to find the lost Kindle. It can be a severe headache if we lost our Kindle device. Use this list and match it to the first four or six characters of your Kindle serial number Usage 3. Actually, Kindle Serial Number can help you identify the Kindle model or specific generation with the first four characters. Sometimes it'll be difficult for us to answer the question 'which Kindle do I have'. Unfortunately due to abuse direct linking to results is no longer allowed.Over the years, Amazon has released many Kindle devices and many of them look similar in design. They are the only characters in the serial number that are unique to your item but do not affect decoding. For modern (post-2010) 12 character serial numbers you can replace digits 6, 7 and 8 with an x (or any letter) to avoid sending your unique serial number. For details of how this tool works and how it differs from other Apple tools see the how it works page. If yours has a slash or is short (perhaps starting with an A) that is the Apple model number and you should use my Apple model number decoder instead. Classic Mac serial number decoding is a work in progress but should return a date at least.Īpple serial numbers are 10 to 15 characters long (letters and numbers) and don't contain any spaces, dots, hyphens or slashes. There are a few Apple serial number formats and this tool supports them all from the 80s to current day. For an Apple HomePod it will be on the bottom of the device.For Apple AirPods it's on the underside of the lid, the packaging or when connected to it it's on the about screen (Settings>General>About>AirPods).For a modern Apple iPhone it may also be printed on the SIM tray.For an Apple iPhone/iPad on the about screen (Settings > General > About).For an Apple Mac within 'About this Mac'.Apple serial numbers are normally printed on the back or bottom of the device, a few other places they can be found are :.

Mac serial number location