I tried downloading the latest file using the usb and got an error message: "it is not a normal upgrade firmware file. Therefore, please check and try to upgrade again. error code 0x06".

This is all greek to me. Thanks for your help!

error code 0x06

The code i have seen that to was due to the wrong Bin

Neusat regular sp2033reg
Neusat premium 6024pre

If you load the regular on a premium i have seen that error

If you load the premium on a regluar i have seen no error just will not boot back up it will go dead.

That happens use the Factory Loader and Bin for which Unit Quit flip rocker switch and when power up write bin.

I have revived many this way.

Hope this helps.