Uninstall G900T and install G900A - Possible?

[ypavank]

I have an unlocked T-Mobile S5 (SM-G900T) but i am turning into AT&T and want to install SM-G900A on it to get the AT&T default applications and start up screen. Is there a way to do it?

I tried using ODIN, attached PIT file and G900A.tar.md5 but the phone says "SECURE CHECK FAIL : PIT"

Can any one help please.

 

[Jfalls63]

Flashing firmware built for one phone model to another is not a good idea and usually ends bad if you try. The T model in my mind would be more desirable to have due to bootloader not locked. Root, TWRP recovery,and custom Roms should be available while AT&T locks the bootloader on their devices up tight.
AT&T usually only releases the first version of firmware for their devices making it hard to reflash if something goes wrong after receiving a few updates.
Most AT&T stock apps are available at the Play Store