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El Capitan VB - SMBIOS & Custom resolution

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Hi folks! I run El Capitan on VB by guide on this forum. Everything works great, but I'd like to do 2 more modifications and I'll be very thankful if you helped me...

 

1. Adding serials to SMBIOS

The main reason I run virtualisation of OSX is that I want to code apps with Xcode - Xcode wants you tu sign in with your Apple ID to sign apps. I've read that in virtualisation, there are no serials/information in SMBIOS, so "Apple" device can't be verified, which outcome is you to unable to login. I found something about Clover and Clover Configurator. I even tried that, but there were just many errors and problem wasn't solved. Can someone give me step-by-step instructions how to do this?

 

2. Custom screen resolution 

I think this'll be simpler than 1. but I couldn't find any exact guide. I managed to change resolution by VBoxManage setextradata "El Capitan" VBoxInternal2/EfiGopMode N, but I'd like to have 16:9 res (1920x1080). Is there any way to do it?

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      CECI.tool.zip
      CYI.tool.zip
      CMI.tool.zip
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