The best way to up date the def file is
Open iprep101 v006
Go to "tools" then click "check for updates".If kultsh has it done it will update your iprep101 v006
OR
First get your new def file from x-bins.
Open it.

You then need to go to your c: drive

Then Program Files

Now X-progects

Click on the iprep101 folder

Then into the resources folder

Now you will see this.

Replace this def file with the one you got from x-bins.Then you should be good to go.
Try to load the new firmware.
