need some help topic

i have been searching and reading but i still got no were i want to up date to lolli pop that telus has realed my problem is im on hboot 3.16.0.0000 os 1.54.401.5 bootloader unlocked s-off on super cid .im on m8 ul do ineed to go back to my provider cid wich is telus. i tried updating my firmware with adb and it goes thru all the process and it says ok but when i check all my info is the same.also when i try to install a custome rom they always fail any info would be great thanks