Originally Posted by
Shadow1
Check the tech bulletins before you do a memory clear - on D014 machines the older versions of firmware will wipe out the VBCU board
Shadow1 is right...
Performing an NVRAM clear on D014/D015/D078/D079 can take out the VBCU. Other than those machines, I'm not aware of any issues with performing this.
Here are some details from the TSB...
The final resolution is new Engine firmware (P/N – D0145402K version 1. 51:01). This will prevent the data from being erased from IC2 on the VBCU Board when the NVRAM is cleared. In the event that an NVRAM clear appears necessary, it is recommended to replace it instead, if the firmware noted above is not loaded. As always, print out an SMC before replacing or clearing any NVRAM.
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