SVdv Try manually installing the update
refer this guide .
OFFLINE - DIALER
Spoiler: OfflineOTAUpgrade / NothingOfflineOtaUpdate
Download without extracting the right package from Link given below.
In your phone’s memory outside any folder, create a new folder called.
Code:
ota
and place the previously downloaded .zip file there
Open the dialer app and dial.
Code:
*#*#682#*#*
Press on Directly apply OTA from select, start the update and wait for it to finish.
When the message asking you to reboot appears, go back to your phone’s homescreen (by pressing the home button or by swiping if you have gestures enabled) without selecting anything.
Full link (Mod Edit:these links are not allowed)