Which is the last Software update for Lumia 521

[nitikosovo]

Which is the last Software update for Lumia 521 that is avaliable in settings phone update ; without being in insider program

 

[Guytronic]

The 521 stopped at 8.1
T-Mobile discontinued support for the phone long ago.

 

[nitikosovo]

The 521 stopped at 8.1
T-Mobile discontinued support for the phone long ago.

Windows 8.1 Cyan or Denim - which version include Notification Center!!!

 

[Guytronic]

It's hard for me to remember.
I think the T-Mobile 521 stopped on Cyan.