Get Samsung GALAXY A7 SM-A700H lollipop 5.0.2 Update
Instructions
Extract (unzip) the firmware file
Extract Odin ZIP file
Open Odin v3.10.7
Reboot Phone in Download Mode (press and hold Home + Power + Volume Down buttons)
Connect phone and wait until you get a blue sign in Odin
Add the firmware file to AP / PDA
Make sure re-partition is NOT ticked
Click the start button, sit back and wait few minutes.