While no US carrier-branded variants of the Galaxy S4 have received an official update to Android 4.4/KitKat yet, Samsung has dropped the KitKat kernel source for the Sprint's model. While that by itself is really only of interest to developers, its implications will matter to a much larger audience. Generally, Samsung does not release kernel source for builds that aren't official. Historically, once source code is made available, official OTA updates follow in reasonably short order.


The new firmware build number is L720VPUFNAE. Currently, there is no official word from either Samsung or Sprint on when the accompanying OTA update will roll out, but if building kernels and hacking are your thing, go have fun.

Source: Opensource.Samsung.com

Shawn De Cesari
Shawn is a web developer by day and XDA's resident archivist for Nexus and Google Play Edition device OTA updates by night. When not immersing himself in code or Android, he can be found hunting down antique signs, taking road trips, listening to music, or playing video games. His daily drivers are a Nexus 6 and an iPhone 6 Plus.
  • Ruurd Bijlsma

    Note 10.1 2014 wifi version kitkat source also just became available

  • http://silverfang77.tumblr.com/ Silver Fang

    What about VZW?

  • Tower72

    VZW wont have KitKat out for awhile yet...sad to say...sort of makes me regret going back to them from my One on AT&T

  • http://www.androidpolice.com/ Artem Russakovskii

    Ota confirmed rolling out Feb 13.