If you did not restore settings after flashing the image, there would be no old entries to delete using Putty.
Your original post is full of extraneous text. Let us just deal with the Vu+.
Can you describe again the wiring from LNB to Vu +.
Post screenshots of all the tuner settings for the Vu+. (This is the second time of asking. It will cut through the mud and get to a solution very quickly. Please attach all of them.)