Unlockable Bootloader. Recovery Questions. - Xperia Z2 Q&A, Help & Troubleshooting

I know I have a bootloader that's unlockable but I'm reading some strange stuff about recoveries on this phone.
Is there a reoccurring recovery installation needed after installing a ROM every time? Does that only apply to locked bootloaders?
I was trying to install TWRP since I favor that one over CWM but when trying to install it from their Google Play App it says the image is missing and redirects me to another link which pretty much stays at the 0% progress...
On previous phones I've had things seemed a bit easier (Note3, GS4, Note) or maybe I'm just to cautious since the phone is so new... Anyway I'd appreciate any help on the matters.
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Ok so with xperias they do not have a native partition for the recovery
This means that they have to be stored within a custom kernel (if your bootloader is unlockable) or your system if your bootloader isnt unlockable
Recovery installer scripts that work on locked bootloaders usualy put the recovery file within your system hence why when flashing a custom rom it disapears
Flashing a custom kernel (with a unlocked bootloader) alows you to freely flash custom roms as the recovery is a part of the kernel and not the system
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Ah so if I unlock my bootloader and if I keep the same modified kernel then I'll be OK. But I don't know too many ROMs that are going to come without a kernel...
Probably could edit the install script to skip kernel writes...?
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ZPaul2Fresh8 said:
Ah so if I unlock my bootloader and if I keep the same modified kernel then I'll be OK. But I don't know too many ROMs that are going to come without a kernel...
Probably could edit the install script to skip kernel writes...?
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
If you unlock your bootloader
Install a kernel that contains a recovery
Then yes your recovery stays after a rom flash
Stock based roms should not come with a kernel
Non stock based roms have to come with a kernel (usualy contain recovery anyway)
Your warrenty is void unlocking your bootloader however you can relock
I recomend you read up about bootloader unlocking
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Related

[Q] how to flash, backup, ROM's and EFS partition

Hi I recently bought the sony ericsson WT19i (Live), now I want to flash cyanogenmod but i don't know how. I read something about unlocking bootloader bu I can only find tutorials for Xperia range phone's also is there a way to backup my current ROM and EFS partition?.
I have alot of expirience with android so just some links should do.
Also is there a way to Re-Lock the bootloader?
You must unlock bootloader first. Then flash custom rom, and install cm using update zip.
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Thanks but unlocking avoids warranty and no official updates. Is it worth it?
From what i understand with a locked bootloader you cant boot into recovery, right?
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RafayelG said:
Thanks but unlocking avoids warranty and no official updates. Is it worth it?
From what i understand with a locked bootloader you cant boot into recovery, right?
Sent from my WT19i using XDA App
Click to expand...
Click to collapse
Ssory my english is bad. I am russian user.
With unlocked bootloder you can not oficially update you device.
You can install cwm to locked stok rom and boot into recovery.
Unlock bootloader only need to flash modded kernel.
after unlocking you can lock bootloader. Drm key's not restore
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Ok thanks i'll wait till ics update.
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[Q] Cyanogenmod Bootloader Locked

I have a question, I have a xperia S (lt26i), and I have allowed bootloader status "no", I have the generic 4.0.4 android world, but hey seen you can install the root cwm and also do not need the boot loader unlocked, having locked bootloader could install cyanogenmod 9?? or any way to get it having locked bootloader without having to flash the kernel?
If this was in the right section you would get your answer a lot faster as a lot of people now ignore question threads in the GENERAL section.
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Nope you need an unlock boootloader to boot CM rom
Sent from my LT22i using Tapatalk 2
Not yet would be the right answer as some people are working on trying to get custom kernel onto a locked bootloader as this is the thing stopping users with locked bootloaders have cm ://
techno-np said:
Nope you need an unlock boootloader to boot CM rom
Sent from my LT22i using Tapatalk 2
Click to expand...
Click to collapse
I read somewhere that putting a generic rom 4.0.4 in specific and having locked bootloader cwm installed, you could install CM9, 9 not 10, because the kernel was compatible with CM9 and did not need to flash another kernel. And would have locked bootloader CM9 with and without flash kernel.
Its possible. You have to wait. check this thread, you can understand.
http://forum.xda-developers.com/showthread.php?t=1961638
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this guy (seems) to have done it!
http://forum.xda-developers.com/showthread.php?t=1969804
(even this)

[Q] is it possible

just I want to know is it possible to flash recovery IMG without root access ?
if yes then how.
Thanks in advance xda
It depends on the device, root is within the os and independent from the recovery. Some devices have unlocked bootloader or the ability to unlock and then flash a custom recovery without inherently having a rooted device.
But on most, a custom recovery and rooted device go hand in hand
To answer if possible and how you would have to look into your device specifics
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If I root my z2 with a locked bootloader can I install mods like the sound 1 and if s

How do I go about installing a sound mod after I have rooted my z2, the bootloader is locked but I have heard this isn't a problem any more.
If anyone can tell me how I would be eternally thankful.
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Flash in recovery as you normally would (install dual recovery if you haven't already, I assume you have of course). It's just kernels you can't flash with a locked bootloader
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[Q] I'm Stupid (bootloader locked and flashing)

First of all, I'm spanish, my apologizes of my expresions or misspelling.
That's what I've done:
1 - I've checked if my bootloader was unlockable, and my phone say's: NO
2 - Then I've installed the DualRecovery W/O root and with my phone bootlocked.
3 - Then I've tryed to flash CM11 in TWRP recovery, flashing first the Boot.img via fastboot.
4 - Device in Red Light.
What I can do to woke up my Z2? That's my record 2 hrs to **** my phone. :silly:
Firstly, it's stated in the first post of the CM11 thread that you shouldn't be using dual recovery. If you read the thread further, you'll see that it is recommended to use the recovery in DooMKernel to flash. And this requires unlocked bootloader.
Anyways, you can try using Flashtool to flash a stock firmware. Might be able to recover your phone.
xavisaldana said:
First of all, I'm spanish, my apologizes of my expresions or misspelling.
That's what I've done:
1 - I've checked if my bootloader was unlockable, and my phone say's: NO
2 - Then I've installed the DualRecovery W/O root and with my phone bootlocked.
3 - Then I've tryed to flash CM11 in TWRP recovery, flashing first the Boot.img via fastboot.
4 - Device in Red Light.
What I can do to woke up my Z2? That's my record 2 hrs to **** my phone. :silly:
Click to expand...
Click to collapse
If your BL is locked, you cannot install CM.... coz you cannot install a custom kernel. you should rebuild your phone using SEUS to put a good ROM.
Then you can put whatever ROM you want for LB and root it. but no custom kernel.
http://forum.xda-developers.com/showthread.php?p=53968631
Try here, there is a recover/unbrick tutorial
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Envious_Data said:
http://forum.xda-developers.com/showthread.php?p=53968631
Try here, there is a recover/unbrick tutorial
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Click to expand...
Click to collapse
Hi there,
Is there any way to get root access without unlocking the bootloader. I found some ways in XDA but nothing is clear.
I would really appreciate if you guys can send me a link with a clear tutorial of how to get a new ROM without unlocking the bootloader.
I just got my Z2 which is sim locked (UK) and I can't unlock the bootloader from the official page.
Many thanks,
tux
tuxiqul said:
Hi there,
Is there any way to get root access without unlocking the bootloader. I found some ways in XDA but nothing is clear.
I would really appreciate if you guys can send me a link with a clear tutorial of how to get a new ROM without unlocking the bootloader.
I just got my Z2 which is sim locked (UK) and I can't unlock the bootloader from the official page.
Many thanks,
tux
Click to expand...
Click to collapse
Root For Locked Bootloaders (noted to work fine on all FWs)
http://forum.xda-developers.com/showthread.php?p=53420860
Recovery For locked bootloaders
http://forum.xda-developers.com/showthread.php?t=2785598
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Envious_Data said:
Root For Locked Bootloaders (noted to work fine on all FWs)
http://forum.xda-developers.com/showthread.php?p=53420860
Recovery For locked bootloaders
http://forum.xda-developers.com/showthread.php?t=2785598
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Thanks a lot mate. I'll give a try to the first url, hopefully I won't brake it.
Many thanks,
Tux
Edit. I have 17.1.1.A.0.402. Anyone tried to root it ? It says it doesn't work.
tuxiqul said:
Thanks a lot mate. I'll give a try to the first url, hopefully I won't brake it.
Many thanks,
Tux
Edit. I have 17.1.1.A.0.402. Anyone tried to root it ? It says it doesn't work.
Click to expand...
Click to collapse
Root with the Easy Root Tool, worked like a charm for me : http://forum.xda-developers.com/showthread.php?t=2784900
tuxiqul said:
Hi there,
Is there any way to get root access without unlocking the bootloader. I found some ways in XDA but nothing is clear.
I would really appreciate if you guys can send me a link with a clear tutorial of how to get a new ROM without unlocking the bootloader.
I just got my Z2 which is sim locked (UK) and I can't unlock the bootloader from the official page.
Many thanks,
tux
Click to expand...
Click to collapse
Yeah, working right now, then 3 questions more:
first: the phone comes with a Vodafone rom, I can put some "unbranded" rom? how?
second: I can't unlock my bootloader forever ??
and third: What is the function of recovery mode if I can't flash any cRom? Just backups?
Thanks all ^^
xavisaldana said:
Yeah, working right now, then 3 questions more:
first: the phone comes with a Vodafone rom, I can put some "unbranded" rom? how?
second: I can't unlock my bootloader forever ??
and third: What is the function of recovery mode if I can't flash any cRom? Just backups?
Thanks all ^^
Click to expand...
Click to collapse
You can download a Generic FTF and use flashtool to flash it to your device
Once you unlock your bootloader it stays unlock till you relock
You can flash roms n manage general other stuff from recovery
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Envious_Data said:
You can download a Generic FTF and use flashtool to flash it to your device
Once you unlock your bootloader it stays unlock till you relock
You can flash roms n manage general other stuff from recovery
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I know what do with a unlocked bootloader, but my phone does not support any bootloader unlocking system... Any chance to do it?
xavisaldana said:
I know what do with a unlocked bootloader, but my phone does not support any bootloader unlocking system... Any chance to do it?
Click to expand...
Click to collapse
If you phone cant be unlocked then it cant be unlocked
No way around a non unlockable bootloader
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Envious_Data said:
If you phone cant be unlocked then it cant be unlocked
No way around a non unlockable bootloader
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
All right then, I have a gimped terminal. Great!
Can I install Xposed tweaks btw?
xavisaldana said:
All right then, I have a gimped terminal. Great!
Can I install Xposed tweaks btw?
Click to expand...
Click to collapse
Yes, you can install anything but non stock based roms and custom kernels
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Thanks Bro
Got xposed, rooted and recovery installed.

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