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Exclusive: new Android 4.3 versions spotted on Nexus devices

Posted at 18 June 2013 20:47 CET by Jan Willem Aldershoff

Android 4.3 versions JWR66D and JWR53F have been spotted in the wild, running on  Nexus 4 and Nexus 7 devices. We spotted LG E960 devices  running these new and before unknown Android builds. Google not only names each major version to a form of sweetness (Gingerbread, Ice Cream Sandwich, Jelly Bean) but also has different strings for builds of the OS.

In this case both build numbers (JWR66D and JWR53F) mean that they are Jellybean (‘J’) builds from the second quarter of this year (‘R’) and the final number is x-th day in the quarter, in this case 66 and 53. The final character remarks the build of the day, the D is the fourth build, the F is the sixth build of that day. What the ‘W’ means is so far unclear. This means both versions are from the end of May, beginning of June.

We found traces of these new Android 4.3 builds by monitoring the user agent strings,  used by browsers to identify themselves.  Besides that, we also found traces in the issue tracker of the Google Chromium project. In this issue tracker Google keeps track of issues with both the open source Google Chrome OS and Chromium, the open source browser on which the Google Chrome browser is based. Sometimes the issue reports include Android build numbers.

We found the following strings with the devices they were running on respectively:

Myce.com is generally about computer storage but we also monitor several open source projects. We were also the first site to reveal details on the Google Pixel Chromebook.

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There are 3 comments

TSJnachos117
MyCE Senior Member
Posted on: 19 Jun 13 06:14
    Danm! I'm still waiting for my Android Tab to let me download 4.2.x! I'm still stuck on 4.1.1, with no updates for my device in site. If due to being more outdated in the futrue I end up either not being able to run apps, or having some Malware exploit a security hole, then f*** Android altogether! I'll experiment with completely Android as odds are, the ARM/tablet version of Ubuntu will work just fine!
    TSJnachos117
    MyCE Senior Member
    Posted on: 24 Jun 13 02:37
      Quote:
      Originally Posted by TSJnachos117
      I'll experiment with completely Android as odds are, the ARM/tablet version of Ubuntu will work just fine!
      I meant I'll experiment with completely removing Android, as odds are the ARM/tablet version of Ubuntu will work just fine!
      Dee
      Senior Administrator and Reviewer
      Posted on: 27 Jul 13 14:12
        Android 4.3 was rolled out to my Nexus 4 this morning.

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