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Original post by: Renaud Labracherie ,

Text:

Hello,

i have the same problem with my MacPro4,1 RAM disk is created, but the update doesn't work

So, you just boot on an external hard drive a clean El Capitan system and run the  Mac Pro 2009-2010 Firmware to perform the update ? Sound great ! Could you just tell me i'm right ?

Thank you.

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open