There are 2 ways for upgrade NDU Gateway, depends on a version that you want (Release or Develop).
To upgrade to Release version you should use following commands:
Installation from pip
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sudo pip3 install thingsboard-gateway --upgrade
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sudo pip3 install thingsboard-gateway --user thingsboard_gateway --upgrade
To upgrade NDU Gateway docker installation use Upgrading step from Docker installation guide.
**Notate: ** If you have some issues with upgrade, please try to remove package from pip in every system layer (sudo, user, local).
To do this please run following command:
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sudo pip3 uninstall thingsboard-gateway -y
After removal, you need to install the gateway again using command above.