We pushed a minor update for Prepar3D users of the PMDG 777-200LR/F earlier this evening.
The update capitalizes on some performance enhancements we worked out for both prepar3D platforms, and it adds the rolling friction model we introduced with the 747-400 earlier this year. We had a half dozen other minor items in this update that we fixed just because we had our hands on stuff, and we also corrected a bug that caused the brakes to overheat for some users in unexpected conditions...
You can obtain this update via the Operations Center.
We are working to publish a rollup-update for FSX/FSX-SE users. That should drop before the weekend, we think.