[Unlock request]Dell precision t7500

I have a t7500 not interested to overclock (but it would be nice) just want to make it that it dosnt halt the system when non-ecc dimms are inserted to it can some one take a look at the bios it specs are
Mobo : 0D881F
Bios : https://downloads.dell.com/FOLDER0526145...500A18.exe
Chipset : 5520
Thanks.