How to update unlocked at&T s3 help

[Horr1bleK1tten]

I'm using it with tmobile currently and I want to update my phone but I'm hearing the latest update is ota Kies doesn't say anything. Is there a flash able zip out there that I can flash to update? Or how can i update?

Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

 

[tohio]

[GUIDE] AT&T CWM-flashable UCALG1 update | no wipe, leaves root and universal search - xda-developers