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add Fixing App Store error: "Your device or computer could not be verified. Contact support for assistance."
add Fixing App Store error: "Your device or computer could not be verified. Contact support for assistance."
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== Tunneling SMB mount through SSH ==
= Tunneling SMB mount through SSH =


* ''Last tested on OS X El Capitan 10.11.5''
* ''Last tested on OS X El Capitan 10.11.5''
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</source>
</source>


== Changing hostname that shows up on CLI ==
= Changing hostname that shows up on CLI =


* ''Last tested on OS X El Capitan 10.11.5''
* ''Last tested on OS X El Capitan 10.11.5''
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$ sudo scutil --set HostName newhostname.local
$ sudo scutil --set HostName newhostname.local
</source>
</source>
= Fixing App Store error: "Your device or computer could not be verified. Contact support for assistance." =
*Tested on: OS X 10.7.4 Lion
*Difficulty: 2/10
*Time: <10 minutes + your WPM
Once you type your credentials inside the App Store you get a red text message reading, ''Your device or computer could not be verified. Contact support for assistance.'' According to the links provided below, it seems that the OS X does a simple check of the ethernet identifier to determine whether or not "your device or computer" has been verified. The system-generated /Library/Preferences/SystemConfiguration/NetworkInterfaces.plist contains an indicator value to tell you whether or not your ethernet card is "built-in."
<source lang="xml">
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Interfaces</key>
  <array>
    <dict>
      <key>Active</key>
      <true/>
      <key>BSD Name</key>
      <string>en0</string>
      <key>IOBuiltin</key>
      <true/>
      ...
</source>
If the error message comes up your value for the key IOBuiltin is most likely set to <false/>. Here are the steps to solve this problem.
== 1. Get EFI string for your ethernet card ==
=== a. Find out the devicepath for the ethernet card ===
You can use a utility called gfxutil (GFX conversion utility) to find out. Version 0.71b can be downloaded from [http://michaelhan.net/public/gfxutil here].
Make sure the file is executable if it isn't already.
<source lang="bash">
$ chmod u+x gfxutil
</source>
Then execute the file with a parameter "-f ethernet" for the devicepath. NOTE: Your devicepath will be different from mine.
<source lang="bash">
$ gfxutil -f ethernet
DevicePath = PciRoot(0x0)/Pci(0x1c,0x1)/Pci(0x0,0x0)
$
</source>
=== b. Convert the plist from text to hexadecimals ===
Create a plist in your favorite text editor as follows:
<source lang="xml">
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
        <dict>
        <key>PciRoot(0x0)/Pci(0x1c,0x1)/Pci(0x0,0x0)</key>
                <dict>
                <key>built-in</key>
                <string>0x01</string>
                </dict>
</dict>
</plist>
</source>
Save it as '''ethernet.plist'''. Then convert into hexadecimal format using '''gfxutil'''.
<source lang="bash">
$ gfxutil -i xml -o hex ethernet.plist ethernet.txt
</source>
Open '''ethernet.txt''' and copy the content of the file into the clipboard.
== 2. Update the boot plist file ==
Your boot plist may be different depending on the bootloader. Mine is called org.chameleon.Boot.plist and it is found under /Extra folder. Open it up with a text editor and paste in the hexadecimal value as a '''device-properties''' pair.
CAUTION: Don't insert it between other key/string pairs.
NOTE: Your hexadecimal string may look different.
<source lang="xml">
...
<key>device-properties</key>
<string>4b00000001000000010000003f0000000100000002010c00d041030a0000000001010600011c0101060000007fff0400160000006200750069006c0074002d0069006e0000000500000001</string>
...
</source>
== 3. Delete all network interfaces ==
Go into your Network settings and delete (click on -) all of the network interfaces you have listed there. It's possible you may only need to delete the Ethernet.
Delete */Library/Preferences/SystemConfiguration/NetworkInterfaces.plist*. Yes, delete it. It's auto-generated by the system during the boot process.
== 4. Reboot ==
And enjoy.
== References ==
(all accessed on July 19, 2012)
http://www.insanelymac.com/forum/index.php?showtopic=114349
https://discussions.apple.com/thread/3175514?start=0&tstart=0
http://www.macbreaker.com/2012/01/how-to-fix-mac-app-store-error-your.html

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