download firmware : A505FDDU2ASH4_A505FOJM2ASI1_XSG
after downloading the firmware Extract the File Will get 4 Files inside the Compressed File .
Flash Firmware in the phone with odin and go to setting > About Phone > Software information > now Click in Build No. 7 time till Developer Option Enabled, click back and look for Developer Option > Enable OEM Lock option,
now put Ap file Extracted from firmware to phone’s internal memory and install Magisk Manager.apk download from here
after installing Magisk Manager open it and click on
Continue Will Update after a While ………………….