TN tech ... there was a question right in my initial groundhog day reply so not sure how you missed that ... ??
not sure what your gripe was but tried to get a response to 'what did you end up doing?' or a suggestion from the forum
well here's the rest of the story
dealer came back with $849 estimate to replace the lower dvd unit after the region code reset FAILED
so i did a little research and found an outfit that repairs these dvds
United Radio - Quality Electronics Service Since 1923
and Kevin has been very helpful
kmarais@unitedradio.com
to remove the dvd:
look carefully under the dash trim just above the navigation control monitor ... there are two plastic covers you need to pry off... it's like a compression fit that you need to gently pry off and down
remove the 2 philips screws under the covers and gently pry the dash cowling up and out of the way
the trim piece can now be pryed out at the top as there are some slots along the side that provide resistance
however ... the bottom section has two screws that can be revealed by removing the 3 screws on each side of the bottom cowling that covers the lower dash panel (where your feet rest)
pull the lower dash panel out and you'll see the two screws that need to be removed ... now the center dash panel can be slowly pulled out as the wiring harness gives you some room to pull it aside
now you can unscrew the 2 screws actually holding the dvd in place
you will find the dvd still seems screwed in but it's just a compression fitting at the back of the dvd ... gently pull and and wiggle a little straight back and the dvd should release
carefully pull the dvd out and try to guide the wires connected thru the access panel
on the back of the dvd depress the little black tab and the whole wiring harness will release
not sure if this helps but I'm hoping united radio can fix it ... initial quote was 215