Can it be upgraded for free if the esl system is a linux system on windows?

Can it be upgraded for free if the esl system is a linux system on windows?

Can it be upgraded for free if the esl system is a linux system on windows?
Q: Sertag's eRetail3.1 system can be upgraded for free on windows. Can it be upgraded for free if it is a linux system?

A: Yes, just like Windows system upgrade, use the upgrade package to update the files in the corresponding folder. When replacing, delete the sppsettings.json file in each upgrade folder, and then overwrite all files (required during upgrade) Stop running services).