Yes you can , just use the files from sammobile ,xda forums,here and use Odin 3.13.1 prince comsey ,might be a newer version of it
I got your PM , I sent you oneHow do you download firmware from XDA developers?
Another thing is if your phone not sim unlocked this will not unlock the sim , you can flash it and use the unlocked firmware but wont be sim unlocked unless you already have done that .
I'm positive , I've done this countless times from s7,s8,s9,s10,note10OK.
One last thing, my current firmware code is ATT, would it be OK for me to flash my phone with an XAA (unlocked) firmware? REMEMBER THAT MY PHONE IS BOOTLOADER LOCKED!
Are you sure it won't mess anything up in my phone
I'm positive , I've done this countless times from s7,s8,s9,s10,note10
NiceI did exactly what you are doing starting from a Verizon version. Changed to a U1 with no issues, get OTA updates, etc. All's good