I have a module in odoo10 who is importing a huge bunch of data at installation time; my data is in xml file so I am able to stablish the parameter noupdate to 1 and avoid the reload of the data on updates. The problem is that I need to be able to select if the data should be reload or not, when i click on update, based on a boolean field on module form view. 

Any one who could give me some directions to develop the module?.  Is there a module making something like this?.

Thanks to Peter, I have developed my module that way and solved the reloading data when i want to update the module; unfortunately at this time I can't show the wizard on updates, only at installation time.