[II Entro II]

This has been confirmed by me ( II Entro II ). I did not discover this method, it was posted by Frozone13 here. As always, use this method at your own risk.

1. Sign out of Xbox Live
2. Reset your rank (instructions here)
3. Unlock the Private First Class achievement
4. Return to the dashboard and sign into Xbox Live (make sure you are in the dashboard and not the game) so the achievement gets uploaded
5. Delete all Rainbow Six 1 & 2 memory (Not sure why you have to delete R6V1 memory...)
6. Delete your Gamerprofile
7. Recover your Gamerprofile
8. You should now have the Private First Class achievement and your current rank

If you have anything to ask my gamertag is above.

Please sticky this.

Ps. You wont lose any A.C.E.S points, EXP or achievements.