This usually means the file is not for the "Nu" chipset. Double-check your hardware version.
Upgrading the firmware on your Samsat receiver is straightforward. However, it requires careful execution to avoid bricking the device. 1. Preparation Samsat Hd 50 Titan Software 55
Plug the USB drive into the receiver's front or rear USB port. This usually means the file is not for the "Nu" chipset