![]() ![]() We find such a piece as I identified in Fig.(Figure 5) Yes, it did not give out a lot of lines, but we need one connected to our PCI-E port. Green, I highlighted what is relevant, and the red address 0x104 (we'll fill it). Green, I marked what we need (0x1), and what's red is there by default (there is 0x0 ie disabled).Īnd so we found at what address the setting is 0x104. After downloading, you should see the yellow text on the black screen.We save and boot through our USB flash drive.Overloaded in BIOS (enable Legacy and disable Secure Boot).Take the BOOTX64.EFI file (from EFI Shell) and put it in the Boot folder.Create the directory structure EFI \ Boot.We take a flash drive, the size is not important.Also have found that there it is necessary to register that it was included. Enter setup_var 0x104 0x1 and press Enter.Enter setup_var 0x104 (this is the parameter we were looking for in A.7) and click Enter and see that it contains 0.This means you are ready to modify the BIOS setup. If all of the OKs (ie, a write to the BIOS settings memory is enabled), then the setting is saved. #Uefitool microcode updateĪnd it will not be reset if you do not update the BIOS firmware and do not discard the BIOS settings before the default settings. If the option Hot plug has become active for the port we need, it means the quest is over. You can find it yourself with the following steps: The described actions can be applied not only for the Hot plug option.While the sound itself has been disabled, I found the iconic chime is still part of the firmware itself (File GUID: 03C70B0D-67E6-5C16-8E57-312DF246A961) as part of the MacBookPro13,1 (and 13,2 or 13,3) firmware. Download macOS Sierra Build 16B2657 from the appStore.| Tagged chime, firmware, Macbook Pro 2016, sound, UEFItool | 2 Comments Rename your file with a ‘.caf’ extension.Strip the 1st 4 bytes in hex editor for example (everything before the ‘caff’ identifier).Right-click on the Raw section and select “Extract as is” and safe it somewhere.Launch UEFITool and open the file and click on “Intel Image”.Copy MBP131_0205_B02_LOCKED.fd (for the MacBookPro13,1) somewhere on your machine.Open InstallESD.dmg in Contents -> SharedSupport.Right-click on it and select Show Package Content. It seems that on its 2016 MacBook Pro’s Apple has deactivated it’s famous startup sound / chime. This cought my attention and I was interested to find out where this sound is stored (on older Mac’s). As I learned it is (or used to be at least) part of the Macs firmware. Get a firmware from a PowerPC Mac as these are based on OpenFirmware (not EFI) and thus easier to extract.While so far I couldn’t find a way to extract the sound from an Intel / EFI based firmware, there seem to be ways to get the sound from PowerPC based Macs. ![]() ![]() Look for the file XServeFirmwareUpdate.pkg and show its package contents.įor example this one from the Xserve G5 XServeFirmwareUpdate.dmg #Uefitool microcode mac.In the sub folder named Contents is the file. ![]()
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