[Q] Why do we need to flash boot.img for non stock roms? - Xperia Z Q&A, Help & Troubleshooting

Hey guys, i came from a HTC incredible S
it had AOSP roms as well and you just flashed the zip and it booted.
however here on the xperia z forums, i am reading that you need to flash the boot.img manually for AOSP roms
is there a reason for this? thanks

I think because the recovery is not working 100%
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gm007 said:
I think because the recovery is not working 100%
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ahh thanks
that leads to my next question
why is it taking so long for a working recovery for the Z?

spazzy1912 said:
ahh thanks
that leads to my next question
why is it taking so long for a working recovery for the Z?
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Don't know
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Because that's how it works on SonyEricsson/Sony Phones.
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XperienceD said:
Because that's how it works on SonyEricsson/Sony Phones.
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Yes because Sony's phone doesn't have a special partition for recovery that's why it's integrated with the kernel.
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Boot.img is the kernel, you can only write to the boot partition in fast boot mode for Sony devices. Regardless of model, its the same for x10, arc, P, S, Z, etc
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Related

[Q] What ROMS can the locked bootloader Xperia Z flash

Hi,
Just as the title says. What ROMS can we flash with our locked bootloader Xperia Z's
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weeo said:
Hi,
Just as the title says. What ROMS can we flash with our locked bootloader Xperia Z's
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You can use any Rom that is based on a stock firmware and kernel.
Make sure you have cwm recovery to flash Rom
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abd_alazeez2002 said:
You can use any Rom that is based on a stock firmware and kernel.
Make sure you have cwm recovery to flash Rom
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Oh. That sucks. So I'll never get CyanogenMOD on my Xperia Z
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weeo said:
Oh. That sucks. So I'll never get CyanogenMOD on my Xperia Z
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Not unless someone manages to find an exploit to unlock it.
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abd_alazeez2002 said:
You can use any Rom that is based on a stock firmware and kernel.
Make sure you have cwm recovery to flash Rom
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i heard you need to be on stock based firmware to install the recovery,
but you can flash on other roms and manually flash the kernel or something like that
im not too sure,
Kallb123 said:
Not unless someone manages to find an exploit to unlock it.
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And what's the possibility of that happening
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Kallb123 said:
Not unless someone manages to find an exploit to unlock it.
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BL is already unlockable, one unlocked u lose all DRM, there is no need for exploit.
Root was needed just to push the recovery to the stock kernel.
And CM uses a completely different kernel than the stock and the only way to flash it by unlocked BL
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abd_alazeez2002 said:
BL is already unlockable, one unlocked u lose all DRM, there is no need for exploit.
Root was needed just to push the recovery to the stock kernel.
And CM uses a completely different kernel than the stock and the only way to flash it by unlocked BL
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Not all of us have unlockable bootloader though
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weeo said:
Not all of us have unlockable bootloader though
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Exactly. I'm not sure of the chances that non-unlockable devices will become unlockable. If I said any amount if time I'd be making it up :/
One of the devs said that Sony bootloaders are locked up tight though...
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Kallb123 said:
Exactly. I'm not sure of the chances that non-unlockable devices will become unlockable. If I said any amount if time I'd be making it up :/
One of the devs said that Sony bootloaders are locked up tight though...
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Yeah. I'm trying to trade my Xperia Z in for an unlockable one now
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[Q] URGENT! STUCK! CRY CRY! Phone is stuck

Hi,
So i have a bootloader locked Xperia Z. I installed the CWM for bootloader locked phone and installed ROM AUR which is supported for Locked BL phones. So it got stuck at the installation and I turned the phone off. now its stuck at sony logo. any help please
Use flashtool and flash a stock rom.
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go see the Original Development section krabappel2548 thread discussion. It seems this recovery has some problem yet. Try installing one more time?
It also happend to me on my Xperia S. While the phone is turned off connect it to pc and flash stock rom with wipe anything selected abd nothing exclude.
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gm007 said:
Use flashtool and flash a stock rom.
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Yeah just did that. Its now starting up. i flashed the russian build even though im in uk. is that ok.
weeo said:
Yeah just did that. Its now starting up. i flashed the russian build even though im in uk. is that ok.
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Yes no problem.
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gm007 said:
Yes no problem.
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Thanks it worked. I'm never flashing a ROM on this phone
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Need stock boot.img for 4.2.2 with no recovery

As above. Need it for porting purposes. So stock 4.2.2 boot.img. Preferably the one 10.3.A.0.423.
I haven't got any net connection here and mobile net is capped so can't do a big download. ASAP please
It's a boot.img
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Taylor_Swift said:
As above. Need it for porting purposes. So stock 4.2.2 boot.img. Preferably the one 10.3.A.0.423.
I haven't got any net connection here and mobile net is capped so can't do a big download. ASAP please
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Is it the same as kernel.sin, right?
DrKrFfXx said:
Is it the same as kernel.sin, right?
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Shouldn't it be a boot.img
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That's what I got on a ftf file.
DrKrFfXx said:
That's what I got on a ftf file.
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Hm. Basically something with stock recovery or stock boot.img
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Here you goView attachment boot.zip
Stock 423 Boot.img taken from Nandroid backup.
shoey63 said:
Here you goView attachment 2194053
Stock 423 Boot.img taken from Nandroid backup.
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Thanks bro.
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New

Hey guys just got my xperia z today and i was an ex note 2 user and i usually always use to backup efs before flashing anything so i want to flash 4.3 official stock on my c6602 should i be afraid on losing efs/imei or this is only a samsung issue? Thx in advance
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The_Flashaholic said:
Hey guys just got my xperia z today and i was an ex note 2 user and i usually always use to backup efs before flashing anything so i want to flash 4.3 official stock on my c6602 should i be afraid on losing efs/imei or this is only a samsung issue? Thx in advance
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No, just flash.
If you want once a custom ROM/Kernel it would be good that you make a backup of your TA before unlocking bootloader.
Edit: if you want root, there is a stock based custom ROM with root and recovery(for 4.3).
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One last question i have some black dots on my camera some reffered to be a software issue thats why im trying to update i am currently running 4.2.2
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The_Flashaholic said:
One last question i have some black dots on my camera some reffered to be a software issue thats why im trying to update i am currently running 4.2.2
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I don't know. You can try it and see what happens.
I searched a bid and found this(I don't read that much always a bit)
- http://talk.sonymobile.com/t5/Xperia-Z-ZL-ZR/Dust-inside-of-camera-lens/m-p/308338
- http://forum.xda-developers.com/showthread.php?t=2419240 (+ The link in the answer: http://forum.xda-developers.com/showthread.php?t=2311497)
Guys can anyone provide me s1 boot fastboot drivers for the c6602 i installed it from flashtool drivers folder but still getting and error while trying to flash the firmware
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The_Flashaholic said:
Hey guys just got my xperia z today and i was an ex note 2 user and i usually always use to backup efs before flashing anything so i want to flash 4.3 official stock on my c6602 should i be afraid on losing efs/imei or this is only a samsung issue? Thx in advance
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And please name your threads properly... New does not say anything.. like the other threads you make
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Are you stalking my threads??
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HellRoot said:
And please name your threads properly... New does not say anything.. like the other threads you make
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The_Flashaholic said:
Are you stalking my threads??
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I noticed that also. A normal thread name is really not like that. A thread name says in some short words the problem. Example: bricked phone says much more then only i have a problem. That is the sense of a thread name
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Phone not booting (urgent)

Hello fellow users. Today, i flashed williams kernel on my xperia sp running existenz ultra. After switching on my phone, everything fced and my phone crashed. I cant turn it on and the yellow button at the back has no effect. Please help
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Unlocked the bootloader before flashing the kernel?
~~Regards
Can you reboot in to recovery?
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creepycow said:
Hello fellow users. Today, i flashed williams kernel on my xperia sp running existenz ultra. After switching on my phone, everything fced and my phone crashed. I cant turn it on and the yellow button at the back has no effect. Please help
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Please provide some details about the situation you are having. Did you unlock the boot-loader before flashing the kernel?
I flashed it through CWM
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Bootloader was unlocked
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When facing with this problems, it is recommenddd to immediately flash stock firmware upon shutdown of device. Use flashtool and flash ur device's stock firmware to your device quickly
Regards,
Furrydaus
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Thanks but now i have a different problem, i have no signal evem after flashig stock ftf and repairimg using sus. Help?
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creepycow said:
Thanks but now i have a different problem, i have no signal evem after flashig stock ftf and repairimg using sus. Help?
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Download and flash the baseband fix zip. Its on the forums and a simple search function will help you
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I will try it on thursday. Thank you sooooo much. Hit the thanks button already
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creepycow said:
I will try it on thursday. Thank you sooooo much. Hit the thanks button already
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Hahaha no need to tell me that you hit it!
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its not working furrydaus, my phone still has no signal, bootloader unlock:no. Please i didnt expect things to go that far i only flashed williams kernel on exsistenz ultra and all this happened.
creepycow said:
its not working furrydaus, my phone still has no signal, bootloader unlock:no. Please i didnt expect things to go that far i only flashed williams kernel on exsistenz ultra and all this happened.
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Which Williams kernel? Cm ones cannot be used on existenz
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I 100% guarantee it was the stock based kernel. Anyways, as it is still early in the morning here, I am just gonna write down some steps here. 1. Flash CWM for locked bootloader
2. Restore previous backup
3.See if it works?
4. Factory reset if it works
5. See if bootloader unlock allowed changed from yes to no and if yes unlock bootloader
6. Flash existenzultra
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creepycow said:
I 100% guarantee it was the stock based kernel. Anyways, as it is still early in the morning here, I am just gonna write down some steps here. 1. Flash CWM for locked bootloader
2. Restore previous backup
3.See if it works?
4. Factory reset if it works
5. See if bootloader unlock allowed changed from yes to no and if yes unlock bootloader
6. Flash existenzultra
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So did it work?
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It did not, I sent it to sony to get it fixed. Hopefully they wont charge a fee.
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creepycow said:
It did not, I sent it to sony to get it fixed. Hopefully they wont charge a fee.
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this might be silly but i had same problem on other roms and what i found out is that SOMETIMES all i needed to do was wipe cache+davlik cache and all came back happened 2 times to me today and it worked both times hope it helps and give it a try:good:

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