Hello Audery,
Please check the below responds from MCUXpresso Config Tools team:
"
The tool is initially installed without the data for MCUs and board and the data are downloaded on-demand via internet. Once the processor/board is used once, it's cached and you don't need internet connection anymore.
It's described in the tools documentation too - once you create a configuration, use the command help > contents and find chapter Introduction / versions.
If it's required to work complete offline, the data can be exported on one computer using File > Export... > Program data and manually copied (e.g. using flashdisk) between computers from/to folder c:\ProgramData\NXP\mcu_data_v3 .
"
BR
Have a great day,
TIC
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