iMessage not working on Mavericks

[entropid]

I'm running OS X 10.9.4 on a Sony VAIO. I'm using Chameleon. When I try to log in into iMessage, it doesn't work. I tried following the guide in this forum, so I deleted the plist and folders in Library, I installed FileNVRAM and I also tried to check the MLB and ROM values. However, on this last bit I got stuck, as iMessageDebug keep reporting empty values:

**********************iMessage Debug**********************
Credits: ElNono, mdmwii,flux84, sugarface, pokenguyen

              Model: MacBookPro7,1
           Board-id: Mac-F222BEC8
       SerialNumber: CK14301TATM
      Hardware UUID: 1E1144F1-F2FB-5EEE-BC71-8BC829C9EBDE

          System-ID: 28656E60-4486-11DC-86D2-0013A9C40193
                ROM: failed
  BoardSerialNumber: failed

         Gq3489ugfi: 078d43dc58f908f9e95446d75d7ea4c42d
          Fyp98tpgj: 886d9628e5089a9a78a2df76a4ada05f93
         kbjfrfpoJU: 2fb6694b44310df1646e79712715338f75
       oycqAZloTNDm: 0000000000000000000000000000000000
       abKPld1EcMni: 0000000000000000000000000000000000

If i check the NVRAM though I get this:

MacBook-Pro:Extra entropid$ NVRAM -x -p
<?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>4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14:MLB</key>
<data>
Q0sxNDJBMDdBVE1VNEJDRDg=
</data>
<key>4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14:ROM</key>
<data>
/Xaz5d8x
</data>

How can I solve the issue? I tried inject the MLB and ROM values but it doesn't seem to work.

MacBook-Pro:~ entropid$ sudo nvram 4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14:ROM=%FD%76%B3%E5%DF%31
MacBook-Pro:~ entropid$ sudo nvram 4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14:MLB=CK142A07ATMU4BCD8

After this, iMessageDebug still shows failed.

[holyfield]

Please check this post: Pattern of MLB (Main Logic Board), it might be helpful.

[entropid]

I was using Chameleon r2286, where the NVRAM injection was broken. I downgraded to r2283 and it worked.