The firmware for the LVC-9006 contains 3 files, two of which contain the Macrovision hex code (55 53 00 00 ...). I tried combinations of uploading both files and just one file, but no luck. The code did change it to region free, but the 9006 seemed to ignore the Macrovision hack.
The Macrovision string is spanned between two different address lines (0x001DE7B6 to C1), but I don't know if that matters. ILOHacker seemed to recognize this and changed 0x001DE7C1 from 00 to 01.
As far as VHS playback, that's a very good point made by Capt_KA. This is actually the second 9006 I'm trying. The VHS playback of the first unit (manufactured 12/04) was not good and I thought it was a manufacturing defect, because, according to Lite-On tech support, playback is supposed to be very clear. I replaced it with another 9006 (manufactured 1/05), and it's not "jumpy" like the other, but the color quality is still not good on all my tapes. I tested with some store-bought tapes that were only three years old. Shawshank Redemption was my best example. During the scene where Tim Robbins first arrived at the prison, Morgan Freeman's face appeared gray with spots of red on it. I tried it in two other VCR's here, and the color was much richer. It's almost as if I were seeing a digitized image that wasn't converted very well. Some tapes with not as rich of an image as Shawshank Redemption seemed to playback better, but still not quite as "smooth" as my other VHS players. I don't know if this is something the firmware can change. It's too bad because this recorder has everything I would want wrapped into one, except for the quality of the VHS player.