can I update my OS from android 5.0 to marshmellow on a galaxy S5 G900A

[AC Question]

I want to try out marshmellow OS and need to know if I can go back to 5.0 if I find it messes anything up. I have my phone unlocked and in developer mode. If you have comments about marshmellow that you think are worth knowing BEFORE I switch I would ALSO APPRECIATE IT. Is there any new security risks I need to consider?

 

[Sam_Gs7]

Welcome to Android centralForums
I guess you Can. But is a bit complicated Android. BTW=ByTheWay..whatKind
of Phone is that.? - I'm from the opinion folks.

If youève Samsungs from 4-5- vers. Is better Upgrade to At least 6th version-Phone
respectively in order to get MarshMallow. But this ver. is almost over..
Wait better for Nougat. With new Phone..Think about-Bye

 

[ironass]

The AT&T model of Galaxy S5, G900A, has still not had Marshmallow released by AT&T for it. See, At&t galaxy s5 marshmallow?