Lumia 720 not even updating to Amber

[Sorry4LastNight]

Nokia Lumia 720 from other country
My phone is not even updating to amber, Whenever i click on check for updates then it always shows your phone is up to date.
So what should i do to update my phone, Please help me ASAP :crying:
I am attaching screenshots

 

[Asik15]

ah man ..... you should hide your IMEI number before posting here in public .....
Btw Its Kinda wierd but you can flash with a new firmware by downloading through navifirm+.....
Edit :is your phone carrier locked and from which country

Nokia Lumia 720 from other country
My phone is not even updating to amber, Whenever i click on check for updates then it always shows your phone is up to date.
So what should i do to update my phone, Please help me ASAP :crying:
I am attaching screenshots
View attachment 68487
View attachment 68488
View attachment 68489

 

[Sorry4LastNight]

hey can you guide me how to flash my phone with a new firmware, when navifirm is not connecting to its server..