In both case, the same change is listed in the release notes for the new firmware. Nikon S3000 firmware v1.1 and Nikon S4000 v1.2 both correct an issue whereby charging of the cameras' EN-EL10 lithium ion battery packs doesn't stop charging after a predetermined time limit. The S4000 firmware also rolls in a change made in last April's v1.1 firmware update, which boosts the high definition 720p (1,280 x 720 pixel) video mode frame rate from 24 to 30 frames per second. It is important to note that when upgrading the firmware of the S3000 and S4000, any images or movies stored in the cameras' internal memory will be erased. Users should be sure to back up their data before performing the upgrade.

Announced in February 2010, the Coolpix S4000 and S3000 both feature an effective resolution of twelve megapixels, and a 4x optical zoom lens with a useful 27mm wide angle. The Nikon S3000 and S4000 don't include any form of mechanical image stabilization, instead relying on software techniques to combat blur from camera shake. Saving a little cost, the Nikon Coolpix S3000 uses a smaller than average 2.7" LCD display, while the Nikon S4000 provides a 3.0-inch LCD. Both cameras store data on SD or SDHC cards, or in internal memory. The Coolpix S3000 offers 47MB of memory, and the S4000 has 45MB. Power for the Nikon S4000 and S3000 comes courtesy of a proprietary lithium-ion battery, rated as good for 220 shots on a charge in the S3000, and 190 shots in the S4000. Both cameras also offer USB 2.0 High Speed data connectivity. The Coolpix S3000 is priced at $150, and the Coolpix S4000 is about $200. For more details, read our Nikon S3000 preview or Nikon S4000 preview.

The firmware for each camera can be downloaded from Nikon's website, on the Coolpix S3000 v1.1 firmware and Coolpix S4000 v1.2 firmware download pages respectively.