Review from Mozamibique since we get South African units here.
Last week I went ahead and bought 55U7QF. The TV looked solid in store and I was excited by the reviews on this thread and avforums.
Brought it home, turned it on and it immediately asked me to download K1110 update. I went ahead and updated. Everything was fine until I turned off the lights at night and immediately noticed heavy backlight bleeding. Went to settings and played with local dimming, backlight and ultimately did a factory reset. Nothing helped. I started googling like crazy, looked up dirty screen effect samples, VA panel factory defects and this was definitely a defective panel.
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So I went to the store and they kept the screen for 2 nights to "test". Eventually they called me to pick up a new TV, test it in store with the lights off until i'm satisfied and take it home.
This new panel is fantastic so far. The full array local dimming works well.
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I noticed the Dolby Vision flicker in TV's native Netflix app but on Android TV box, the Netflix app works perfectly. Unfortunately this TV did not receive an update to version K1110, however I asked Hisense support to send me the latest update and they sent me version K0904. I have downloaded it (~2GB) this morning and will install it later today and report back,
Here's the response from Hisense support with link to download and password:
The filename says HE55A6900FUWTS but the support person has confirmed that 55U7QF is the consumer model number and HE55A6900FUWTS is the internal model number. Fingers crossed.
I will upload the firmware to Mega/Google Drive and share the mirror here just in case the link goes down.
Have a great day everyone!