Sorry for English. I tried installing the 4.4 rom and cwm kitkat, but since then my phone does not start anymore. "firmware upgrade encountered an issue. please select recovery mode in kies and try again."
PRODUCT NAME: GT-I9505
CURRENT BINARY: CUSTOM
SYSTEM STATUS: CUSTOM
KNOX KERNEL LOCK: 0x0
KNOX WARRANTY VOID: 0x1
CSB-CONFIG-LSB: 0x30
WRITE PROTECTION: Enable
eMMC BURST MODE enabled
PRODUCT NAME: GT-I9505
CURRENT BINARY: CUSTOM
SYSTEM STATUS: CUSTOM
KNOX KERNEL LOCK: 0x0
KNOX WARRANTY VOID: 0x1
CSB-CONFIG-LSB: 0x30
WRITE PROTECTION: Enable
eMMC BURST MODE enabled