There are tools that do this automatically for you, but to date they only work on Windows and as a general rule of thumb it is a bad idea to blindly run scripts found on the internet on your computer, even if the author doesn't mean any harm, thin...
Xperia Z1 (C6903) Generic NCB firmware (.FTF)
Downloaded through Sony PC Companion, decrypted and repackaged by Flashtool v0.9.13.0.
DO NOT FLASH THIS WITH FLASHTOOL VERSION 0.9.11.0
I would have thought this to be obvious, but you need a version...
The Disadvantage of Xperia Z
Xperia Z heat up so much during use and it back cover reached up to 38 to 42 Degree temperature
If you are live in country where normal environment temperature is 35 to 45 then both these temperature together make heat...
Xperia Z (C6603) Generic NCB firmware (.FTF)
Downloaded through Sony Bridge for Mac, decrypted and repackaged by Flashtool v0.9.11.0 (05/06/2013).
Android version: 4.2.2
Kernel: 3.4.0-g3865184 BuildUser@Build...
Oh yeah, heaps of activity here...
Until such time as devs take up this phone in numbers, I don't think there'll be much to look forward to. And with Samsung being cagey with their source and consequently devs abandoning their products in numbers...