Sony announced the Xperia Z1s at CES earlier this month, and it quickly showed up on T-Mobile's website. So Americans looking to just own the handset have had a week to order one online from the carrier, while those wanting a deeper relationship with the device - to love it for what's on the inside, rather than the outside - have had to wait a little longer. But now their opportunity has come as well. Sony has published the kernel source code for the Xperia Z1s on the same day as the phone's debut in T-Mobile's retail stores.


These files are necessary for developers to create custom ROMs, and Sony has had a good track record of making them available for its devices. Yet while that may be the case, T-Mobile isn't doing its part to help out, as the company has requested that Sony not allow bootloader unlocks on the Xperia Z1s. Nevertheless, anyone who still wants to get their hands on that open source archive can find it at the link below. The complete download is 347MB.

Source: Sony Mobile

Bertel King, Jr.
Born and raised in the rural South, Bertel knows what it's like to live without 4G LTE - or 3G, for that matter. The only things he likes sweeter than his tea are his gadgets, and while few objects burn more than a metal phone on a summer day, he prefers them that way anyway.

  • Mado

    Its like giving a recipe for a goddamn delicious meal but the door to the kitchen is locked.

    • http://www.flickr.com/photos/77537273@N03/ Herman

      I guess you'll have to find another kitchen then.

      • VoiceofSky

        Or just drop kick the door down

    • epicmau5time

      If fallout has taught me anything, it's that you can make some good eatin's on a campfire

  • KingofPing

    Without an unlockable bootloader, how useful are these files?

    Is Sony expecting the Dev community to turn around a quick hack/unlock on this?

  • epsiblivion

    so we're gonna be waiting on either tmobile to allow unlocks or a hack/exploit before roms are useful?

  • BetterWithRoot

    "...while those wanting a deeper relationship
    with the device - to love it for what's on the inside, rather than the

    This is an awesome quote.

  • joseph carmine nero

    Well Sony did their part,it's T-mobile that asked for a locked bootloader

  • Muzafar

    Unfortunately, I am returning this phone. Nexus 5 on the way instead.
    It's such a great phone, but so sad that it has a locked bootloader. I wish I wasn't so spoiled by being rooted on all my previous devices. lol