I have a beach property that was seriously damaged by hurricane Florence. I had 4 pls TiVo’s in the unit, 2 Premiers that I was using and 1 Premier and 1 HD for back ups. I just went down and brought all 4 boxes home-they have not been connected/used for almost a year. I am not interesting in using them at my home as I have other TiVo boxes here. My question is, can I plug them in and connect them to Ethernet/tv to update the boxes and get some idea if they are working? Not expecting /wanting to actually see tv as beach was different cable provider (m cards, tuning adapters, etc) than home. Just wondering if I will be able to update and get some idea if they might work or not. Thanks for any info.