Do not turn off the power until the TV reboots itself.
Installing the official firmware can resolve several common issues: The TV gets stuck on the Haier logo. App Crashes: Netflix or YouTube fail to launch. Slow UI: Sluggish menu navigation or input lag. Connectivity: WiFi or Bluetooth pairing failures. 📥 Downloading and Extracting Download HAIER 50U7000 Firmware USB part1 rar
Release the button when the "Software Upgrading" progress bar appears. Do not turn off the power until the TV reboots itself