Check for update and return boolean

[rlightner]

I'd like to check for an update, update my display, and the preform the update so the user knows what's happening, but I can't seem to do this currently.

[AlexArGC]

I'd like to check for an update, update my display, and the preform the update so the user knows what's happening, but I can't seem to do this currently.

It's possible! Because the Updater.cpp library already has a callback function.
For example, create your own callback function (here using serial and LCD):

void OnProgress(int progress, int totalt)
{
   static int last = 0;
   int progressPercent = (100 * progress) / totalt;
   Serial.print(".");
   if (last != progressPercent && progressPercent % 5 == 0)
   {
     // print to 5%
     Serial.println(progressPercent);
     lcd.setCursor(progressPercent / 5 - 1, 2);
     lcd.print(char(255));
   }
   last = progressPercent;
}

And before running updater.CheckAndUpdate(); run the code:

// set update callback function
Update.onProgress(OnProgress);
updater.CheckAndUpdate();