Is it possible to upgrade DrivePX2 to Ubuntu 18.04 or 20.04?

Autonomous Vehicles DRIVE PX 2 DRIVE - Linux
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If yes - are there specific instructions on how to do so?

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Dear @uriya,
The last DRIVE release for DRIVE PX2 supported on only Ubuntu 16.04. The recent DRIVE release is now targeted for DRIVE AGX which support Ubuntu 18.04.