If it is rebooting it probably means you are using a Universal LNB (9750/10600) the box requires a LNB providing 9750/10700 or a LNB using 11300. When you change the LNB you may need to turn the power off after changing the setting in the decoder - to get the box to accept the new settings.
The rebooting was happening to my box - a reboot about every hour. Once I changed the LNB it stopped rebooting.
However, you are right - the box is close to junk. My box on a regular basis freezes for a few moments (sometimes up to a minute) also channel changes often result in a lot of pixelation - somtines double images from the previous channel overlaid over the new channel pics - takes a while to settle down.