How do I get OTA from I got last update np. Had no idea my s5active even had custom rom yesterday update failed "kernel" in red locked me out.
The thing is AT&amp;T's S5 Active doesn't have Marshmallow available yet, at least as far as my investigation goes. The best thing you can do is back things up, use Odin to reflash phone (to clean up custom ROMs and such) and try to check for updates again. You should at least be able to accept the update, but 1) it might just be a security patch and 2) since I don't own the phone, what will happen next is beyond my knowledge.