: Ensure you have downloaded all parts of the archive. The extraction will fail if any part, such as part04.rar , is missing.
: Move the extracted firmware file (e.g., allupgrade_5522_8G_1G_ref56.pkg ) directly to the root of the USB drive. Do not put it inside any folders. Download MT5522S PC822 3840x2160 Telefunken part04 rar
Right-click on ( part01.rar ) using a tool like WinRAR or 7-Zip . : Ensure you have downloaded all parts of the archive
: Place all downloaded .rar parts into the same folder on your computer. Extract : Do not put it inside any folders
: Verify the filename matches what is expected for your board; some versions require renaming the file to allupgrade_5522_sos.pkg to trigger a recovery. 3. Installation Procedure
Select . The software will automatically pull data from all other parts (including part04 ) to create a single usable file, typically ending in .pkg or .bin . 2. Prepare the USB Drive
Large firmware files are often split into multiple parts (e.g., part01.rar through part04.rar ).