"Wrong File" error. Solution: Confirm your hardware version. Many IBWRB303N clones use Realtek or Mediatek chips. Open the router case (voids warranty) to read the chipset ID if necessary.
: Ensure you download the firmware specifically for your hardware version (e.g., V1, V2), which is typically found on the sticker at the bottom of the router. Backup Settings "Wrong File" error