Just a post to give my experience upgrading from MCU1 to MCU2. My car prior to upgrade: 2017 Refresh Model S, MCU1, AP2.5, Sunroof, Sirius XM, AM/FM, LTE, FUSC, WiFi 2.4GHz, Free Premium Connectivity, EMMC Recall active, Autopilot (not FSD) My car Post Upgrade: Still 2017 Refresh Model S, MCU2, AP3.0, Sunroof, FUSC, WiFi 5GHz, Free Premium ... More @Wikipedia
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