I have the 5390/37 connected via HDMI -> DVI to my Toshiba HD 55HDM71
Pushing the front button HD UPSCALE would stick to 480P.
In the menu, the HDMI setting will stick to Auto.
Original firmware: 37.06.42.18
I've upgraded to 37.06.42.29 & region patch -> same problem
Then I noticed that the European version (12.06.36.40) contains a fix to "enable up-scaling above 480P using HDMI-DVI connection".
I burn the FW after renaming to DVP5960_37.BIN from DVP5960_12.BIN (otherwise I had DISC UNKNOWN error)
Upgrade went smooth and I was able to choose the HDMI setting in the menu = noticeable picture improvement in 720P, especially the disappearance of macroblocks.
However, pressing the button on the front will bring me back to 480P (need to do the change again in the setup)
My FW is now 12.06.36.40
The LIP SYNC function from 37.06.42.29 is still available, didn't check yet the multichannel through coax.
Looks to me that I have the best out of the two FW and at least I'm able to choose the HDMI resolution which was my goal.http://www.p4c.philips.com
for the FW