: Allows users to back up the current firmware (Dump File) from a functioning receiver before making changes.
| Problem | Likely Cause | Solution | |--------|--------------|----------| | Device not detected | Wrong driver | Use Zadig → libusb-win32 | | Hangs at 5% | Bad NAND block | Erase flash first, or skip bad blocks | | “Device not in loader mode” | Boot pin not shorted | Double-check test point or button combo | | Tool crashes on Win11 | Old USB stack | Use a USB 2.0 hub or XP VM | sunplus loader