From what I've seen it only updates the guide nightly (3:00am default) and it will only reboot when it downloads new software. I always turn my receivers off at night, perform an additional soft reboot when I know they received new software, and do a soft reboot the last weekend of every month just for SnG. I have been doing the monthly reboot since we got VOOM DBS service a couple years ago. I do it when I add Rid-X to our septic system and it has proven to keep the system running clean (both VOOM and Dish Network service); we don't see 99% of crap others report with their receivers.