Press and hold the or Channel+ button on the TV itself (not the remote).
Extract all RAR parts on your PC and copy the final firmware file directly to the root directory (not inside any folders) of the USB drive. Initiate Update: Turn off the TV and unplug the power cord. Insert the USB drive into the USB 1 or white-labeled port. Download BRANDT BAB43F5SNA Firmware USB part4 rar
Once extracted, the result is typically a .bin or .pkg file (often named MstarUpgrade.bin or upgrade_loader.pkg ), which the TV recognizes as an update package. Installation Steps via USB Press and hold the or Channel+ button on
The process can take 5–10 minutes. Do not power off the TV during this time, as it can cause permanent hardware failure. Where to Find the Firmware Insert the USB drive into the USB 1 or white-labeled port
Use a drive formatted to FAT32 for maximum compatibility.
How to update using a USB drive. If your TV is not connected to the Internet, it is a good idea to update your TV via a USB drive. samsung.com
The mention of "part4.rar" indicates you are likely downloading a multi-part archive. You must download all parts (e.g., part1, part2, part3, and part4) before you can successfully extract the final firmware file.
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