i am not on AT&A network, i am using another network(algeria mobilis)
It should be a crime to sell AT&T phones like SM-G900A outside of the USA. They cannot be updated period.
Actually it should be a crime for AT&T to have that much control over a phone you paid the full price for.
So, you got an AT&T Samsung Galaxy S5 to update in the USA by inserting an AT&T SIM card? If so, then that is the ONLY circumstance under which that phone can be updated. I just want to be sure I understand exactly what you did so I am not giving bad information.They can be updated I just did it.
I have the same problem but I'm stuck on 4.4.2.
I have a Samsung Galaxy S5 Active which I purchased off Amazon Unlocked. It is an At&t phone but I am using it in Canada on the Bell Network. I have been unable to get any updates and therefore am still running Kitcat 4.4.2.
I have downloaded the Bell Firmware but Keep Getting the Error Message "Secure Check Fail Aboot" Immediately after each attempt to install with Odin.
I have not been able to find an updated At&t firmware to load and as far as I can tell the Bell Marshmallow Update won't work because My Build version is G870AUCU1A..... Where as the Bell Build Version is G870WVLU1C.......
Is there a way to install this Bell Firmware on my phone ?
So, you got an AT&T Samsung Galaxy S5 to update in the USA by inserting an AT&T SIM card? If so, then that is the ONLY circumstance under which that phone can be updated. I just want to be sure I understand exactly what you did so I am not giving bad information.
Exactly it works perfect! Also I found out tonight you can take it to Best Buy they will update it to Marshmallow also. They have a Samsung rep there.No Feldon old stick. Luckily, for eek2002, I found a thread over on xda developers forum here, where some nice guy had extracted the AT&T update components and made them into a flashable .zip. A lucky break for some AT&T users with the G900A model.
Everything still working great with the update that ironass help me with. FYI....my friend has the same S5 I have , take it to Best Buy they update it for free G900A to 6.0 with no problems.Excellent news then.
People say that as if there is a Samsung representative at every Best Buy.Exactly it works perfect! Also I found out tonight you can take it to Best Buy they will update it to Marshmallow also. They have a Samsung rep there.