Did you ever figure this one out? My factory WD 3TB blue drive died (or I believe, all 4 LEDs blinking). I couldn’t find a 3TB 2.5” drive locally, so I went with a WD blue 2tb which should be more than enough for our needs. It’s stick at “starting up” brand new, no partitions, etc. Drive is a WD208PZX. TiVo is a bolt+, SPCA-00128-000D rev D2.