For those of you looking to develop on the exclusive Xperia Z1s for T-Mobile, well Sony is helping you out. Sony has always been pretty developer friendly. They even made an AOSP ROM for several of their devices last year. Which is always nice to have. The Xperia Z1s is the exclusive version of the Xperia Z1, but for T-Mobile USA. It actually just went on sale in T-Mobile stores yesterday, and it'll run you $0 down, and $22/month for 24 months. So definitely not a bad price, especially considering Sony's prices for their unlocked handsets.
However, today Sony published the source code for the kernel for the Xperia Z1s. Which is nice to have, especially for those looking to develop custom ROMs and kernels for the Xperia Z1s. This is the kernel source for build 14.2.C.0.159, which is the most current build that's on the Xperia Z1s. For those looking to flash custom ROMs and kernels on your Xperia Z1s, you're going to have to do a bit of trickery to do so. As T-Mobile has requested that Sony lock down the bootloader. Which is actually a surprise. Usually Sprint and T-Mobile are the ones that will allow your phone to have it's bootloader unlocked. While AT&T and Verizon will have them locked down pretty tight. But never fear, as the developer community always has a way to get these things rooted so you can enjoy flashing ROMs.
The download for the kernel files is about 347MB in size. So those that want to dig in and play around with the code can do so. You can find it in the source link down below. How many of our readers out there went out and picked up the Sony Xperia Z1s from T-Mobile already? Let us know in the comments down below.