Not sure if this is a clue but my t_mobile unlock ap doesn't work now where it did before.
Also safe mode will stop the screens showing up but that is only because it is in airplane mode. As soon as you activate, it is right back.
I have been dealing with this same firmware issue all week. No matter what I do it will not complete the install but it retries every hour!! This is very annoying and no one seems to want to help with the issue.
I'm experiencing this problem. It is unable to complete iinstallation and keeps on trying again and again thereby generating error.
Request Samsung team to help on this.
Hey there assuming you're using a mmvo carrier sim like mint mobile or cricket wireless, using a att sim to change phone ui to att will not get this problem. Just make sure your sim doesn't change to t-mobile. Seems to be a bug with tmobile app. Hope this helps.