You do not need to wait. Those firmware updates (like Nokia's Lumia Cyan update) and carrier updates are separate from the Windows Phone 8.1 Update 1 RTM update that is now available.
A Puppy's Life to Dog-dom. Weeks 1 and 2. These weeks are very quiet in that the puppies can not see or hear for the first 10 to 15 days, they can not regulate their own body temperature - they are totally dependent on their dam and their environment for warmth, nutrition and stimulation.
Regulation of the body temperature of a newborn puppy is poor for the first 8 days of life and does not become fully effective until about 3 weeks of age. The puppy should therefore be protected against draughts and cold. It is preferable that the whole whelping room should be warmed instead of only the whelping box.