Sony Xperia Z1 C6902

firmware for xperia z1 :

to download android 5.1.1 click her 

to download android 5.0.2 click her

to download android 4.4.4 click her 

after you download the firmware change .rar or .zip to .ftf

flashtool for xperia z1 :

to download flashtool for windows click her