http://www.macnn.com/articles/10/10/07/older.macbooks.can.now.use.newer.chargers/
MacBook firmware update resolves charging issues
updated 07:25 pm EDT, Thu October 7, 2010
Older MacBooks can now use newer chargers
Apple has posted a MacBook SMC firmware update for certain MacBook and MacBook Pro notebooks released between 2007 and 2008. The download resolves an issue that had prevented the older notebooks, equipped with L-shaped MagSafe connectors, from properly charging with newer 60W or 85W power adapters.
To apply the update, the MacBook must be starting up to a version of Mac OS X 10.5.8 or v10.6.4, while the battery must be at least 25 percent charged if the device is not connected to a power source. If the power adapter is not functioning properly, users can reset the SMC as a temporary fix while the update is applied. [Download- 880KB]
