thats what im using. I have a stock 2.17 rom and the instructions say to skip the relocker and proceed to this step with n02chem's .nbh file
7. Now you'll need to run a Rom Update Utility (RUU).
Some of the custom roms come as executables, so all you have to do is run them.
Others are just a single file that ends in .nbh. For those you will need a RUU.
>>> a. Click here to download an empty RUU
>>> b. Copy the .nbh file of your custom rom into the RUU folder
>>> c. Make sure there is only one .nbh file in the folder
>>> d. Double click RomUpdateUtility.exe to begin the update