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I'll just get right to it. When I enter the service menu, it tells me that: unlock bootloader allowed: no. I cannot unlock my bootloader. Now, nobody seems to know of any solutions to this problem. I know it is the carriers that are at fault, but I just want to know if it is *possible* to unlock my bootloader. If not, I will have to return this device for one that is more developer friendly. I love the phone, but can't use it without an unlocked bootloader. Sony needs to fix this.
I sent this email to Sony developer world a few weeks ago, and they haven't responded.
This will be a country or network imposed restriction
That's something you'd have to ask your networks as I'm not privileged to the laws of your land
Morning.
Have spoken to Xperia support with no success.
Have changed my Z1 to a Z2, and am unable to unlock the bootloader.
Bootloader unlock allowed = NO.
There must be a way around this? The phone is 100% mine, not on a contract, etc.

You already had a thread about this on Z1. I will move this one there, there is no need to start a new thread and have the same answers.
EDIT: Moved to a similar section in Z2.
The only way I've heard of this been done is at a service centre as they would need to re-program the eeprom, But if it's to root your device then you may not need to have your bootloader unlocked
Id like to root and flash custom roms, I believe that cannot be done with the B/L Locked (only standard root?)