Hello,
I have been trying all day to install a custom rom on my Xperia Z for T-Mobile. I have succeeded in rooting it and installing the recovery, but it looks like the bootloader needs to be unlocked. I have followed this guide and have rooted and installed the recovery but when I install a custom rom, such as paranoid android lollipop, it gives me an error and I cannot reboot into a rom so I have to run the Sony PC Companion tool and repair the device. I now have a completely stock Xperia Z and wanted to know the best way to install a custom recovery and flash a rom. I have tried unlocking the bootloader but it says bootloader unlockable no when I dial service, even after installing root and recovery. I have tried anyways and it says operation not permitted when I try to cmd the unlock code into fastboot. I was hoping someone could help me and guide me on how to fix these issues and finally install a custom rom.
Thanks
T-mobile Z bootloader cannot be unlocked, therefore you cannot flash custom kernel, therefore you cannot flash a ROM that uses anything other than stock kernel. Look for the "LB" tag in the ROM title, these are for phones with (L)ocked(B)ootloaders, and should be STOCK based ROM's.
Just make sure you follow proper procedures when upgrading to different versions of Android.
Related
I've been doing a lot of reading and searching but still can't find a definite answer...
My understanding is that I need to root the device to flash a custom rom
But from the instructions for noobs, they don't usually specify that I have to root
I assume that rooting is a pre-requisite for everything...but then some roms advertise that they are rooted (for example, LeoFroYo)
So it the rooting process tied to the rom itself and I have to root everytime I flash a new rom (if the rom is not rooted)? Or is it universal like HSPL on WinMo?
Rooting is per rom. What is required to flash a custom rom is having an unlocked bootloader and a custom recovery image. From there you can flash a pre-rooted rom.
The root instructions assume that you're gonna keep using the stock version with root abilities added on top. Whereas if you're using flashing something like CM, that already has root and OS tweaks.
FaJu said:
Rooting is per rom. What is required to flash a custom rom is having an unlocked bootloader and a custom recovery image. From there you can flash a pre-rooted rom.
The root instructions assume that you're gonna keep using the stock version with root abilities added on top. Whereas if you're using flashing something like CM, that already has root and OS tweaks.
Click to expand...
Click to collapse
Thanks! So does that mean when I get my phone out of the box, I have to root it once over the stock rom before I can flash any custom rom?
You need to root the phone originally and flash a custom rom. The "pre-rooted" means the rom is rooted. So if you flash that rom then you wont lose root. If you flash an un-rooted rom then you will lose it. So go through the steps and unlock your bootloader then flash a custom recovery image. Then decide which rom you wanted and flash it. All the custom roms are rooted.
futango said:
You need to root the phone originally and flash a custom rom. The "pre-rooted" means the rom is rooted. So if you flash that rom then you wont lose root. If you flash an un-rooted rom then you will lose it. So go through the steps and unlock your bootloader then flash a custom recovery image. Then decide which rom you wanted and flash it. All the custom roms are rooted.
Click to expand...
Click to collapse
That explains it. Thanks for your answer
one more question:
I take it as when bootloader is unlocked, there's no way to lock it again? Not even flashing the stock boot image?
No, once you unlock the bootloader, it stays unlocked.
Just to be clear here you don't _have_ to "root your phone once"
On _most_ phones you need an exploit to be able to get to the bootloader, this exploit is often referred to as rooting. After the exploit you generally have superuser access until you reboot, on some phone this may allow you to get at the bootloader and write anything you want there (E.G. an OS that give you superuser access at boot time)
However the N1 lets you issue the command "fastboot oem unlock" that unlocks the bootloader, from there you can flash a recovery image that will allow you to flash the main OS without having access to Google's release signing keys. Hence you _could_:
1. Bootloader unlock
2. Flash Custom recovery
3. Flash Custom OS
Without ever actually having "root" access, it just happens that most Devs prefer having root access available in both recovery and any custom rom they cook up.
Hello, i have an Xperia Z1 C6906, and it has locked bootloader, but i rooted it and flashed dual Recovery. If i want to install a custom rom in recovery just like most of the devices is possible? or i have to use the flash tool on the pc?
I just want to install a AOSP rom, im sick of Sony UI.
alexmurr152 said:
Hello, i have an Xperia Z1 C6906, and it has locked bootloader, but i rooted it and flashed dual Recovery. If i want to install a custom rom in recovery just like most of the devices is possible? or i have to use the flash tool on the pc?
I just want to install a AOSP rom, im sick of Sony UI.
Click to expand...
Click to collapse
If you want to flash an aosp rom, then you would have to unlock your bootloader and flash the rom through recovery
alexmurr152 said:
Hello, i have an Xperia Z1 C6906, and it has locked bootloader, but i rooted it and flashed dual Recovery. If i want to install a custom rom in recovery just like most of the devices is possible? or i have to use the flash tool on the pc?
I just want to install a AOSP rom, im sick of Sony UI.
Click to expand...
Click to collapse
Yes you can install custom rom but need to be based on Sony firmware
For AOSP ROM you need to unlock the bootloader & flash it through recovery
Flashtool is to use for flashing stock ftf
Ben Ling said:
Yes you can install custom rom but need to be based on Sony firmware
For AOSP ROM you need to unlock the bootloader & flash it through recovery
Flashtool is to use for flashing stock ftf
Click to expand...
Click to collapse
So there is no way to me for installing an AOSP rom? my Z1 is not allowed to unlock Bootloader
alexmurr152 said:
So there is no way to me for installing an AOSP rom? my Z1 is not allowed to unlock Bootloader
Click to expand...
Click to collapse
No.
alexmurr152 said:
Hello, i have an Xperia Z1 C6906, and it has locked bootloader, but i rooted it and flashed dual Recovery. If i want to install a custom rom in recovery just like most of the devices is possible? or i have to use the flash tool on the pc?
I just want to install a AOSP rom, im sick of Sony UI.
Click to expand...
Click to collapse
well u can still find another launcher for your z1 and use Xposed framework to modify a lot of things since u have rooted
custom rom like CM is a (slightly) more experimental stuff and are usually used by people with more experience in android.
not recommended for u at the moment bro (well u cant unlock anyway)
I current run Android 4.4 rooted using NUT tutorial. My Z1 is a C6906 with a locked bootloader and I am considering testing out some roms. From the research I did the monxDIFIED rom is one of the few that work with my phone. Is this the process:
1. in TWRP install the rom
2. remain in TWRP and install Z1-lockeddualrecovery2.7.121-BETA.flashable.zip
3. power down the phone and using flashtool install C6906_14.3.A.0.757_Stripped.ftf
power up the phone on and enjoy monxDIFIED?
Is this the method recommended on the thread of monxDIFIED? The OP have already said how to do it, follow that.
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Hello,
If u really dont know how to install a custom rom, than check out this video.
I hope this help u.
https://www.youtube.com/watch?v=DbvSaaRYRvU
Dear all,
I have rooted my device which is running 4.3 (c5502) (build number: . 101) with towelroot. Now i need to install any custom ROM. I came to know that it requires to install recovery first before flash any ROM. I stuck there..Can you please guide me. I didn't unlock my bootloader yet but I had my TA backup with me.Thanks in advance guys.
whatever u need to know is already there. just search for it. if u expect to be spoonfed then you really shouldn't mess with your phone
The thing is, do we really need to unlock boot loader to flash custom roms, or can it be closed just with root and recovery?
No one tryed it till now I think.
Greetings.
Lemmi1 said:
The thing is, do we really need to unlock boot loader to flash custom roms, or can it be closed just with root and recovery?
No one tryed it till now I think.
Greetings.
Click to expand...
Click to collapse
Yes for flashing custom Roms the bootloader must be unlocked and a recovery must be installed however if you want to flash a stock based Rom unlocked boot loader is not needed. Just Root and Recovery needed for flashing the stock based Roms. Correct me if i am wrong.
I converted docomo japanese so 02g to d5803 and now wants to unlock
bootloader for root?
any guide ?
You don't need to unlock the bootloader to root. There are several ways to do it, but what I did was:
- install dual recovery @ http://nut.xperia-files.com/html/xzdualrecovery-manual.html
(you might need to downgrade to stock 4.4.4 first @ https://forum.xda-developers.com/showpost.php?p=66275977&postcount=2030 )
- then you can either download or create a pre-rooted ROM, then install using custom recovery
Here's a list of stock ROMS if you want to create a pre-rooted ROM:
https://forum.xda-developers.com/z3-compact/general/list-stock-firmwares-d5803-d5833-t2906706
You only want to install 4.4.4 temporarily, to install a custom recovery, so it doesn't matter what language it is. And I would try installing Dual Recovery without downgrading first. It might work. I don't know.
It will work for any OFFICIAL ROM. If you want unofficial, you have to unlock the bootloader, which is a separate process. Never done it, but there are guides on these forums.