Recent content by CharlieSierra

  1. CharlieSierra

    New battery causing OS drama, "error updating firmware"

    Hi, I haven't been able to find any joy solving this via Google, so hoping one of you clever clogs can help me. I've installed a new battery (from a battery store, as reputable as I could find) in my Macbook Pro mid-2010 17" unibody. Starting up I get the error "macOS could not be installed on...