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...0068APS9KAfsZwYSteps:
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