: You must have all parts (part01 through the final part) in the same folder before you can successfully extract the firmware. If you only download part 09, it will not open.
: Right-click the first part ( part01.rar ) and select "Extract Here." WinRAR or 7-Zip will automatically pull the data from all subsequent parts, including part 09.
To download , you generally need to visit the specific forum or Telegram channel where the original multi-part upload was posted. Common sources for this specific board include: