It's my first android phone and as I came to learn a bit about the system, I wanted to unlock my bootloader o I could install custom roms and kernels, as I have been playing with some cutom roms, but I can only access the ones that do not require Bootloader unlocked (i.e., I can't install CyanogenMod, MIUI v5, etc).
Checking in the SERVICE hidden menu, the status in my phone says "Bootloader Unlock Allowed=NO" (so I coudn't follow the official Sony guide to unlocking the bootloader) and I contacted my phone carrier to ask them wether they could do something about it, either by free or paying methods. They replied that bootloader is a device function, not a service provided/modified by them and that I should ask directly to Sony. As there is no Sony mobile branch in Argentina, I went to the talk.sonymobile forums to post my question in hope that someone may be able to tell me wether something can be done about this. Over there someone said that they thought it could be done (something about having done it with xperia Z), that I should ask over the xda forums, so here I am.
I searched info over the forums but didn't find any threads regarding my specific problem, which is changing the "bootloader allowed" status from NO to YES with phones bought from a telephone carrier. I've found tons and tons of info on how to unlock the bootloader, but all of them are for "bootloader allowed=yes" cases, so I thought it was worth the shot asking about this.
I should also add that my phone is in fact SIM-locked at the moment, and I have no idea wether this is a limitation for what I'm trying to do or not. Reading throughout the web I encountered several places that said that SIM-Unlocking your phone via NCK code (which I could obtain from my phone carrier) does not, indeed, unlock your bootloader, but I was wondering if it might, at least, change the status to "Unlock Allowed=YES" (this, I read, is sometimes the case).
I am eager to find a solution to this situation, so any help will be much appreciated.
Thanks in advance!