How-To: Use TowelRoot To Root Many Sony Xperia Devices With Locked Bootloader (Xperia M2,V, TX, SP, ZR & More)
How-To: Install Official Android 4.3 Jelly Bean 12.1.A.1.201 Firmware On A Sony Xperia SP C5302/C5303
How to: Install the ClockworkMod 6 Recovery on your Sony Xperia SP with the Android 4.3 Jelly Bean 12.1.A.0.266 OS