*We are going to use two example firmwares from the latest Oreo release, N950U1UEU3CRC1 & N950USQU3CRC2., this can be done with older firmware just get firmware from around the same date.
1. Download both of the latest firmware for the N950U & N950U1.
2. Open Odin 3.13.1 and boot the phone into Download Mode
3. In Odin, Load the BL, AP, & CP from the N950U1 firmware (N950U1UEU3CRC1) but load the CSC from N950U (N950USQU3CRC2) (Do not use one labeled home)
3. Reboot, enjoy N950U1 with T-Mobile features and icons.