If you read or post in previous Hisense thread, then you should found links to firmware.
Btw,
look here:
https://forum.lowyat.net/topic/3873180/+420

go to Russia 4pda forum (with google translate) and you will found more...

No... did TV price went back up? I think this model similar to my 2020 A7400F which I got for RM2.5K. Dolby Vision, Android TV9, MEMC.

Nope, no OTA. I dont really mind since mostly security update. I dont see any difference to my recently purchased X90J with Google TV.

Any other Hisense 65A7400F user in here having the same issue as mine?
Some images while playing fast-action videos is lagging. Quite badly I say

And it happens all the time, using the built-in Android and even PC connected to the screen

Also, why is the built-in Android in the A7400F displaying at 1080P instead of 4K?
I can only utilize 4K when there's another device connected to the TV through HDMI (PC/External Android Box/PS5)

Bought mine in 2021. If I'm the only 1 having this issue, I still have some time to RMA it

Do you see the artifacts only when watching animes or other fast-moving videos too?
Haven't tried disabling the MEMC, will try it when I get home

The artifacts are really annoying

Everything has some glitches or artifacts here & there
Videos I've played:
1. Movies, Animes & TV Shows played using KODI through network shared drive
2. Anything in Netflix
3. Anything in UniFi PlayTV

I don't have Astro & never will

But they only appeared during fast action scenes. Haven't tried turning off MEMC though as suggested by andrekua2

By the way, can you check if the built-in Android TV on your 65A7400F is also displaying only at 1080P instead of 4K?

Subtitles or not, it's still the same
Don't remember the picture preset, will update later
No. The Google Android TV itself
Having the ability to play 4K video files and the OS itself displaying at 4K is 2 different stuff
Even 1080P screen can play 4K videos too, it's just not displaying at 4K

For those who wants to update their A7400F firmware to L0205, here's the actual steps:

Download Link: https://mega.nz/file/wZhVzArS#q5t-1mKlCSjja...0068APS9KAfsZwY

Steps:
1. Download and extract the "upgrade_no_tvcertificate.pkg" file to the root folder of your USB flash drive formatted to FAT32 in MBR partition table
2. Turn off the TV
3. Disconnect the power cable
4. Insert the USB flash drive into any of the USB port at the back of the TV
5. Hold the power button on the remote making sure it's pointing to the TV IR receiver while reconnecting the power cable (might need help from another person for this)
6. Wait until the update process is complete. It will take a few minutes

Owh and a special reminder to all: The firmware update will reset the TV. Everything you've installed/downloaded into the internal storage of the TV will disappear

Important Note: The firmware update is only valid for Hisense A7400F TV with this service code:
HX65A6106FUW

Special Note: I am not responsible for any damage that might occur. Run the firmware update on your own risk

How did it go?

Where do you find the service code?

Which version did u update? Anything new after update?

Did you download the one for H50xxxxxxx?

Updated to 0205 and honestly not much difference. Maybe a bit smoother. The only thing I hate is they wiped out everything.