1. Download archive .
2. Ensure you have CWM 5.8.4.5 recovery installed. 3. Reboot into recovery 4. Apply SDMergE400_Step1.zip from sdcard. The phone will reboot on success prompting you a new recovery. 5. Apply SDMergE400_Step2.zip from sdcard. The phone will reboot on success prompting you an old recovery for step3 .