Sony Vaio VGN-CR29XN AHCI

Hello,
I am desperately trying to make AHCI enabled on my laptop. I allready tried whit the SONY VGN-CR220E unlocked bios, which I found here on bios.mods.com, but unfortunately it didn't work.

So now I am kindly asking, if it is possible to unlock my version of bios. Below I attached the link to the original bios.

http://www.sony.co.uk/support/en/product...56269_3814

Thank you in advance.