Locked Bootloader, Config Says "No" Can't Unlock, But Have Root... Am I stuck?

[johnathanamber]

Locked Bootloader, Config Says "No" Can't Unlock, But Have Root... Am I stuck?

Hey everyone,

Well, I had to pull out my previous phone, my Tmo D6616 Xperia Z3. I replaced it when the battery was all bloated and could explode, etc. I replaced it with an LG G5. And, I have the horrible GPS issue with my G5 that just doesn't work well at all. This bugs me. I travel with my family enough that I use it and has caused some wrong turns, etc. I want to replace it, but don't see any good deals in my situation since I have no number to port-in or a new person to bring on the plan.

So, here I am checking on what I can do with my Z3. I've replaced the battery, got a new case, and also replaced the screen protector... just like a brand new phone, except the ROM is really outdated. It is currently on the latest OTA from Sony, Android 5.0. I did check to see if there is a more recent stock ROM and there isn't.

I want to install a new ROM, in which I should be able to backup the TA partition since I am rooted.

When I do the *#*#.... code, then check to see if the bootloader can be unlocked, it says no. Because of that, am I out of luck?

Am I able to use root to unlock the bootloader and install another ROM?

 

[ovais_43]

Same question here...

Am I able to use root to unlock the bootloader and install another ROM?

I also want this answer.

 

[DolDrum]

If it says "no" to unlock the bootloader, then you can not unlock the bootloader.
You can, however, use root and recovery.
Check out https://forum.xda-developers.com/z3/general/guide-rootrecovery-how-to-root-install-t3017056. Just stick it to xperia Roms. Search the forum, I think Marshmallow is the latest.
As far as I know, other Roms than Xperia are not recommended for a locked bootloader. But there are other, xperia roms, for a locked bootloader Z3.
Good luck.

 

[johnathanamber]

If it says "no" to unlock the bootloader, then you can not unlock the bootloader.
You can, however, use root and recovery.
Check out https://forum.xda-developers.com/z3/general/guide-rootrecovery-how-to-root-install-t3017056. Just stick it to xperia Roms. Search the forum, I think Marshmallow is the latest.
As far as I know, other Roms than Xperia are not recommended for a locked bootloader. But there are other, xperia roms, for a locked bootloader Z3.
Good luck.

I was able to get recovery installed, thanks for that. I am not so sure about the MM rom, however. I haven't seen one for the D6616. That would at least make it a little better to work with.