To update a blind, access the "Update blinds" menu, or tap on the "Update now" that will appear when accessing a blind.
Before proceeding, read carefully the instructions about the update process. When you are ready to continue, tap on "OK, got it." button.
If you have several blinds to update, choose one that has a strong signal, then tap on "Tap to update".
It's important to stay near to the blind during the whole update process. Once the update is finished, you can update another blind on the list. If there isn't a blind with a strong signal, move closer to a blind of your choice, until it has a strong signal. Then, proceed as explained in the steps above.