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Xperia J Bootloader and Rooting Help?

I got my Xperia J on contract on march for two years on Three, It's locked and on my bootloader thing it says Bootloader Unlocked allowed: No, how would I unlock my bootloader? and can I root my phone without unlocking my bootloader? I want to root my phone to add custom roms and to overclock my phone. So could anyone answer my question please?

CoNviCTZz said:
I got my Xperia J on contract on march for two years on Three, It's locked and on my bootloader thing it says Bootloader Unlocked allowed: No, how would I unlock my bootloader? and can I root my phone without unlocking my bootloader? I want to root my phone to add custom roms and to overclock my phone. So could anyone answer my question please?
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If you want to unlock bootloader: http://unlockbootloader.sonymobile.com
Yes, you can root device without unlocking bootloader. Search this forum for tutorial!

Answers
CoNviCTZz said:
I got my Xperia J on contract on march for two years on Three, It's locked and on my bootloader thing it says Bootloader Unlocked allowed: No, how would I unlock my bootloader?
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If it says bootloader unlock not allowed , then i doubt there is a safe way to unlock it.
Nearly every method to unlock such a bootloader are shown only for 2011 devices and i have heard 2012 devices have been patched to stop an unlock by that method.
Also those methods involve certain hardware modifications using bare wires and finding the debug port.
Such methods are highly risky and may damage your phone.
CoNviCTZz said:
and can I root my phone without unlocking my bootloader?
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Yes you can root without unlocked bootloader, Framaroot worked without any issues for me, and i don't see any reason why it shouldn't work for you.
Link: http://forum.xda-developers.com/showthread.php?t=2130276
CoNviCTZz said:
I want to root my phone to add custom roms and to overclock my phone. So could anyone answer my question please?
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Click to collapse
You can install Stock based custom ROMs without a unlocked bootloader.
This might help : http://forum.xda-developers.com/showthread.php?t=2237164
And regarding Non-stock based custom ROMs and overclocking, they are kernel mods and to flash a new kernel you need an unlocked bootloader, sorry
--hsr

[Q] Unlocking carrier restrictions on Xperia M2

Hello! sorry for creating a new thread but here it goes.
I bought a M2 xperia and when I reached home I saw that it was carrier locked.
I tried to unlock the boot loader in order to root it but it was a no go.
Eventually I downgraded the firmware to 4.3, rooted it with towelroot and then upgrade it to 4.4 again, the root was still there.
Now my question is, is there any way I could unlock the sim restrictions using my root privileges?
I kinda don't want to pay 30$ for a imei code.
My m2 it's O2 locked, if it has any relevance...
Thank you

Xperia Z3 D6616 T-Mobile Unlocked Bootloader (Can I install custom roms on it?)

Hello guys,
I bought an Xperia Z3 T-Mobile D6616 32GB with an unlocked bootloader unlike other Z3's from T-Mobile.
When I type *#*#7378423#*#* I see that I have ( Bootloader unlock allowed : Yes )
T-Mobile has limited us to Lollipop 5.0, I was wondering if I can install another rom (Lollipop 5.1 or + ) of another Z3 variant since I got unlocked bootloader.
Is it possible in my case? can you guide me please?
Thank you so much in advance.

I followed this guide to unlock my Bootloader, it worked very well, and when I try *#*#7378423#*#* It says ( Bootloader unlocked : Yes ) Instead of ( Bootloader unlock allowed : Yes ).
Can you please tell me if I can install a Rom of another Z3 variant please?

Have you tried it yet? Also, how exactly did you unlock the bootloader?

sony z3 Docomo version (japanese version) Unlockable bootloader

Hello All.
Im new in this forum.
My friend have Sony Xperia Sim Locked version .
Maybe friend in XDA need something for information for make change unlock bootloader allowed no to yes.
His z3 sim locked have Unlock Bootloader allowed : yes
He said need luck for buying secondhand sim locked version Unlockable bootloader.
And my friend Have locked bootloader .
Maybe Any improvements for change no to yes from my friend for unlock bootloader Network restricted phone .
.
sorry for my bad english
I think his Sony Z3 Verizon version. because have CDMA Band..

just use flashtool to Unlock Bootloader

601SO XZ Bootloader Locked

Hello. I have a Softbank 601SO Xperia XZ (which I sim unlocked as recently I changed to Y Mobile) and am wondering what I am able to do with this device. I can't change the status from "Bootloader unlock allowed: No" and when trying to downgrade Android from 7.0 to 6.0 by flashing it, it seemed to be softbricked so I had to factory reset it using Xperia Companion (and it reset it back to 7.0). Does anyone have any experience rooting this phone with the bootloader locked or was anyone able to change the unlockable status to Yes?
Thanks!

chair24 said:
Hello. I have a Softbank 601SO Xperia XZ (which I sim unlocked as recently I changed to Y Mobile) and am wondering what I am able to do with this device. I can't change the status from "Bootloader unlock allowed: No" and when trying to downgrade Android from 7.0 to 6.0 by flashing it, it seemed to be softbricked so I had to factory reset it using Xperia Companion (and it reset it back to 7.0). Does anyone have any experience rooting this phone with the bootloader locked or was anyone able to change the unlockable status to Yes?
Thanks!
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### There is no way, because Bootloader unlock allowed is no. ###

awadnisar said:
### There is no way, because Bootloader unlock allowed is no. ###
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Click to collapse
I see, I thought that some people have rooted their phones successfully without unlocking the bootloader. I've also seen some people saying they successfully changed the unlockable bootloader status from no to yes by sim unlocking or downgrading their OS. Maybe these are rare cases...

chair24 said:
I see, I thought that some people have rooted their phones successfully without unlocking the bootloader. I've also seen some people saying they successfully changed the unlockable bootloader status from no to yes by sim unlocking or downgrading their OS. Maybe these are rare cases...
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Click to collapse
Ya may be, after Marshmallow update you need to root by flashing zip Su/magisk and for that recovery is required.

Yeah, if it can't be brought back to a previous version it's probably not going to work...it's sort of annoying having a phone that belongs to you and is carrier locked even though you no longer have any connection with that carrier!