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Apple releases MacBook Pro SMC Firmware Update 1.7 for:
About MacBook Pro SMC Firmware Update 1.7
This update addresses a rare issue on some Apple notebooks where a battery that has accumulated more than 1000 charge cycles may unexpectedly shut down or stop functioning.
MacBook Pro purchase in 2010 can easily reached 1000 charge cycles by now.
Vondiggity was having an issue with his MacBook Pro, the keyboard no longer lit up. According to the Keyboard System Preference Pane, the backlit keyboard was not present either. After resetting the SMC and NVRAM, the problem persisted. It was a strong possibility that the backlight was disconnected; and I was right. The backlit keyboard connecter can be accidentally disconnected while replacing RAM or Hard Drive.
There is a tiny piece of tape that help keep the ribbon connected to the logic board.
Remove the tape carefully, because you would need it to secure the connection later.
Push the ribbon into the connecting slot on the logic board. Use something that will not deform or damage the ribbon.
Place the tape to help the ribbon in its slot.
Reset the SMC and NVRAM again, OS X will then re-enable the backlit keyboard extension.
