Thank you for contacting the Mio Team. Part of the loss of features in the map upgrade is the ability to add custom points of interest to your unit. There is no way to add custom points of interest to your unit now that the map upgrade has been added.
This information does not appear to be included in Mio's list of lost facilities when the update is applied however. MIO Updaters - be aware!
Mio update - poi additions
