How to get Marshmallow on unlocked AT&T device

[DCBCANES]

I unlocked my AT&T S5 and switched to T-Mobile. I was allowed to download the PA4 patch after switching. Is there a way, without rooting, to get the official AT&T Marshmallow update? Thank you in advance for any help.

 

[anon(632115)]

Use a valid AT&T sim or take to a Best Buy.

 

[can3gxw]

You can also try downloading Samsung Smart Switch onto a PC, connect your S5 and check for an updated firmware there.

 

[anon(632115)]

You can also try downloading Samsung Smart Switch onto a PC, connect your S5 and check for an updated firmware there.

No, you can't not on an AT&T device