Quote:
Originally Posted by mergen3107
2) Look at the box's back, find 16-character serial number. If you divide it into four groups of four characters, like AAAABBBBCCCCDDDD, pay attention to CCCC. These numbers are YWWD, where Y is the last digit of the year (for new Kindles, 1 is 2021, 2 is 2022 and so on), WW is the week number of that year, D is the day in that week. This is the manufacturing date of the Kindle. You need YWWD to be 321X or less, like 317X, or even 2WWD. This will ensure that the FW is <=5.16.2.1.1 for Scribe or <=5.16.0.1 for other Kindles - where getting JB is possible.
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FYI: I just bought a new Kindle Paperwhite 11th gen yesterday on sale at Target with the hope of jailbreaking it. CCCC numbers were 4146 so manufactured this year. It had firmware 5.15.x.x (can't remember last digits). I was able to jailbreak it using LanguageBreak after updating to 5.16.2.1.1.
Edit: By the way I had plenty of time to register it and turn on Airplane mode before it updated. So I can download Amazon content using USB downloads, convert to epub and read using Koreader.