Once the TV boots to the setup screen, remove the USB drive and proceed with the initial configuration. ⚠️ Troubleshooting
Release the button when you see the "Software Upgrading" progress bar on the screen. Download MS638 PC822 3840x2160 Aconatic 49DSU800 part4 rar
Unzip the downloaded .rar file (part4) on your computer. Once the TV boots to the setup screen,
Press and the physical Power button on the TV (not the remote). While holding, plug the power cord back in. Press and the physical Power button on the
Move all extracted files (usually about 6 files) directly to the root of your flash drive. Note: Do not put them in a folder; the TV won't find them.
To update your with the MS638.PC822 firmware, follow this guide to ensure a smooth installation and avoid "stuck on logo" issues. 📥 Prerequisites
Do not power off the TV during the update; this can permanently brick the device. 🛠️ Step-by-Step Installation