SM-A510FD ROOT METHOD
FIRST U NEED TO INSTALL BELOW LISTED FILES
1. FIEMWARE
AFTER DOWNLOADING THE FIEMWARE U NEED TO INSTALL USING ODIN 3.10
2. TWRP
INSTALL TWRP RECOVERY FILE USING ODIN IN AP(PDA) OPTION
3. SUPERUSER ZIP
PUT THIS FILE IN YOUR PHONE OR EXTERNAL MEMORY AND ISTALL THIS ZIP FILE USING TWRP INSALL
WAIT FOR REBOOT
IF SUPER USER IS NOT INSTALLED THEN U SHOULD INSTALL SUPERUSER.APK TO
ACCESS PERMISSION