App Builder plugin
First, you need to install the latest version of our App Builder plugin.
Upgrading Flutter Source Code
You can move the configs file to the new source code, please check the changelogs if we have any changes.
Use the tool to compare the change
If you are a developer and want to pick some features from new to your old source code, you can use any tools below to compare them.
You can use this software https://www.scootersoftware.com/
Or you can use one https://meldmerge.org/ which is free
Ensure you know what you are doing, we do not support custom code, any issue you need to fidget by yourself.