Problems with unlocking Z2 bootloader

[TheXTomex]

I got "FAILED (remote: Command did not succeed)" messgae - everyhting done with http://developer.sonymobile.com/ everything checked twice.
What can cause this problem? (device can have unlocked bootloader)

[freekzak]

Hello,

 I have exactly the same problem. I want to unlock the boot loader because I want to install a custom ROM.

I want to install a custom ROM because Google Play doesn't work (it gives me error conection time out) and I did everything it

was possible : repaired my phone via Bridge for mac and repaired my phone via Sony windows program (I have both mac and PC with win 7 ultimate 64x). I have the latest ADB installed (full pack). I even tried with flashtool for xperia devices but I get the same ... "command didn't succeed".

I want to unlock my allowed for unlocking the bootloader Z2 device. Please PLEASE give me some suggestions///.....