Hope they offer MCU2 retrofit soon :-/
there have been reports of MCU1 upgrading to MCU2 but not mainstream yet.
There have been no confirmed reports of an MCU1->MCU2 upgrade. Again, there are other threads for that discussion.
MCU2 - Retrofit and Musk confirms/Tesla Refutes upgradeability from MCU1 to MCU2
This thread is about V10.0 on MCU1.