Apple has released the MacBook Pro SMC Firmware Update 1.7. The update addresses a very specific issue owners of the MacBook Pro (15- and 17-inch models, Early 2011) and MacBook Pro (15- and 17-inch models, Mid 2010) were having. Though rare, the issue would cause the laptops to unexpectedly shut down or stop functioning after more than 1,000 battery charge cycles.
The firmware update can be downloaded through Software Update on the select models, or users can download it directly here. Last month Apple released the MacBook Pro SMC Firmware Update 1.6, which addressed a similar issue on other models.