http://opensource.samsung.com/reception/receptionSub.do?method=sub&sub=F&searchValue=I9505XXUHOF2
git clone https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/arm/arm-eabi-4.7/
./build-all.py -v -j 8 jf_eur
Error: Unable to access jarfile ../../buildscript/tools/signclient.jar

#make -j8 ARCH=arm CROSS_COMPILE=../prebuilts/gcc/linux-x86/arm/arm-eabi-4.7/bin/arm-eabi- KCONFIG_NOTIMESTAMP=true zImage

Download mode: Volume Down (near Power Key) + Home Button + Power Key
Recovery: Volume Up + Home Button + Power Key