Possible way to flash custom ROM? - Xperia Z3 Q&A, Help & Troubleshooting

Hello, I have a Xperia Z3 D6603 running 23.5.A.1.291 . When I do *#*#SERVICE#*#*, it clearly shows "Bootloader unlock allowed: NO"
However, I was able to flash TWRP and ROOT following the procedure below:
Recovery and Root for MM .575/.291 LB/UB
This is a port of the original tool by russel5 from the Z3C forums I have added support for Z3 D6603, D6653, D6633, D6646 and D6643. PROCEDURE * Update to .291 as usual via OTA from Sony or flashing directly. * Make sure you have ADB set up...
forum.xda-developers.com
I guess for the procedure above, the fact that the bootloader is still locked is not a dependency.
Now the question is, since I got TWRP and ROOT (but bootloader is still LOCKED), is it possible at all now, to flash a custom ROM such as Lineage?
Thank you in advance for whoever can shed some light on this....really appreciate it.
p.s. The very upper portion of the LCD does not work for some reason like many others have reported, hence pulling down the notification bar is not working anymore. It works, however, when the screen is in a different orientation, say horizontal. The main reason I want to flash a custom ROM, is to verify if this is a ROM related issue, or it's purely hardware damage. If someone happen to have any insight on this, please shed some light too ...deeply appreciated.

No you cant flash other ROM without unlocked bootloader but if you are flashed TWRP you can try flash ROM but that can brick your phone

Related

[Q] At stock 5.0.2, what happens if unlock, install new recovery, custorm roms?

Hello, I am at 5.0.2 completely stock and Moto G XT1032. I want to unlock bootloader, install recovery, and custom roms because 5.0.2 is slow and laggy.
I heard about some problems if I start at 5.0.2 and doing those things, such as ripple effect, flickering ....
So what I want to ask/confirm:
1. Is doing those thing possible?
2. What are known problems if I do those things at 5.0.2?
3. Problem like ripple, flickering, unlock bootloader warning... only happen in recovery/booting or even when the phone runs?
4. Any risky things such as bootloop and cannot be fixed .....
Thank you very much.
Same Question from me
Hi,
Same Question from me too.
Please someone who has done this, please reply.
I had rooted/flashed many mobiles, but its being increasingly confusing for xt1033 with every new versions of rom / bootloaders and increasing numbers of Bootloop and HARD Bricks described in this forum.....
Please experts, please reply.
Before proceeding, check the Motorola website to make sure the bootloader can be unlocked.
Unlocking the bootloader will also wipe all data and apps from the phone; that is, it will perform a factory reset.
In my experience, phone operations are not be affected by unlocking the bootloader and installing a custom recovery except you cannot install stock OTA updates without stock recovery.

[q] need root assistance

I have an Xperia Z3 D6603 running android lollipop 5.0.2 and it says in my service menu that im not allowed to unlock my bootloader. ive heard that its posssible to change this on multiple occasions and seen phones of the exact same model and firmware as mine that have unlocked their bootloaders and rooted their phones and i would like to do the same. i have tried different methods of unlocking from both official and unoffical sources, with no success. if anyone can please tell me how i might change the status or how i can unlock my bootloader and root (yes ive heard the risks a million times, no i dont really care about losing the drm keys that allow better lowlight conditions with the camera, and my phone actually has slowed slightly since the lollipop update) it would be much appreciated and of course if any additional info is needed, i will of course provide such as quickly as i am able to. thanks in advance and all input is appreciated.
you cant unlock the bootloader then, if you want root then you will need to downgrade to kk and root the device and install a pre-rooted lp rom

Xperia z3 d6633 23.5.a.1.291 (dual sim)(help)

So basically I want to root my phone.
As mentioned in the title above, this phone of mine exists nowhere as per MY knowledge in being root-able.
This phone was able to be rooted in lower versions. Now I don't think it exists.
1) THE OFFICIAL SONY SITE, won't let me unlock the bootloader.
2) Without unlocking the bootloader I THINK I won't be able to flash a custom ROM.
3) I need help with this.
-Unlocking the bootloader.
-Rooting it
-Getting the best custom rom
-MAYBE being able to use Nougat.
So can anyone on this website kindly help me?
I am a noob and am pretty new, so my knowledge is low, but I am looking forward to root this device now.
Regards

What does it mean to have an Upgraded Unlocked Bootloader?

I've started learning about custom firmware and Xperia Z3 customization a day ago, since I couldn't stand the stock firmware. My current goal is to flash Lineage OS 14.1 on my D6603. And in the post it says it require an Upgraded Unlocked Bootloader. Now I do understand the Unlocked Bootloader part, but I'm not sure about the Upgraded part. And I've done some read around the forum and found one that refers to it but I'm not sure. Doing Google search didn't show too much information about it? The reason that I'm not doing more research is I'm kinda tight on time these day. So much appreciate to anyone can help.
Also my D6603 is currently running the latest MM build with Root access and Dual recovery installed.
The updated part refers to the latest official bootloader from the Sony Firmware .291.
It requires Sony Software called "EMMA" (instructions are easy to find).
Connect your device and flash the latest firmware to get the bootloader on your device.
Backup all your data in case something gows wrong (especially the one on internal storage as it gets wiped in the process I think).
Omario-242 said:
The updated part refers to the latest official bootloader from the Sony Firmware .291.
It requires Sony Software called "EMMA" (instructions are easy to find).
Connect your device and flash the latest firmware to get the bootloader on your device.
Backup all your data in case something gows wrong (especially the one on internal storage as it gets wiped in the process I think).
Click to expand...
Click to collapse
Really appreciate your reply. Would that allow my phone's bootloader to be unlocked too? Because I've just read around a bit and according to the Sony's UnlockBootloader site, I can't unlock it. And I just don't want to be stuck with MM build.
inSecured said:
Really appreciate your reply. Would that allow my phone's bootloader to be unlocked too? Because I've just read around a bit and according to the Sony's UnlockBootloader site, I can't unlock it. And I just don't want to be stuck with MM build.
Click to expand...
Click to collapse
if it says "unlockable - no " in your secret menu I guess it isn't ... but I never had to investigate this.

How can I root my device?

I have a Z5 (latest software version) and simply want to root my device. How can I do it in the easiest and safest way? I have experience with rooting my Xperia Are S (device from 2011) but with the z5 it seems to be way to complicated and different.
I was reading about "DRM keys", what's that, is it important to save?
Furthermore, is it necessary to unlock my bootloader in order to get root? If yes: How can I do that? It's currently locked and I haven't found a way to unlock it.
After rooting, can I flash custom Roms aswell (like lineage with android oreo)?
I have the same problem. I have tried fastboot to unlock the bootloader but it does not detect the device.
Would we have to roll back our firmware to a working version? If so, how could we install this firmware, and which firmware would be the correct version to install?
ps Hadoujamal, if you find a solution please let me know.
Edit: https://forum.xda-developers.com/xp...oot-automatic-repack-stock-kernel-dm-t3301605
was able to get it working reading this guide.

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