[Q] Quick question about bootloader - Sony Ericsson XPERIA X10 Mini

Hey guys, I'm gonna get a brand new Xperia X10 Mini Pro in a few days. I wanna install MiniCM7-2.1.9, and to use that rom I also need to install the nAa kernel, which requires an unlocked bootloader.
So my question is, say if I need to revert everything back to stock (rom, kernel, lock bootloader), for warranty purposes for example. Well, I know that the kernel and rom can be flashed back to stock using flashtool or SEUS, but what about the bootloader?
If I remember correct, you have to lock the bootloader first or else an unlocked bootloader won't work with a stock rom & kernel, which will result in a hard brick right?

chaoscreater said:
Hey guys, I'm gonna get a brand new Xperia X10 Mini Pro in a few days. I wanna install MiniCM7-2.1.9, and to use that rom I also need to install the nAa kernel, which requires an unlocked bootloader.
So my question is, say if I need to revert everything back to stock (rom, kernel, lock bootloader), for warranty purposes for example. Well, I know that the kernel and rom can be flashed back to stock using flashtool or SEUS, but what about the bootloader?
If I remember correct, you have to lock the bootloader first or else an unlocked bootloader won't work with a stock rom & kernel, which will result in a hard brick right?
Click to expand...
Click to collapse
Bootloader cannot be locked again. So if you are unlucky, you will get brick and lose garanty. =)

lolopat2 said:
Bootloader cannot be locked again. So if you are unlucky, you will get brick and lose garanty. =)
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1254225
Read again, at bottom. It can be re-locked.

Tom.K said:
http://forum.xda-developers.com/showthread.php?t=1254225
Read again, at bottom. It can be re-locked.
Click to expand...
Click to collapse
Yes, sorry, i am used outdating info((

ya I did my research and S1Tool can re-lock the bootloader. But am I correct though? My question wasn't really answered...

You have to flash back to stock rom and stock kernel if you want to re-lock your bootloader. Just when you're on stock rom/kernel, then you can safely re-lock your bootloader.

Related

[Q] How to update when bootloader is unlocked Lww

I have WT19i and i have unlocked the bootloader official method. Now i flashed .58 firmware and now i wanna update to .62 but i have read somewhere that after unlocking bootloader if u update the phone gets brick.
So any solution?
If i flash .62 firmware directly then would i get root access too?
cause i have root access in .58
converse5 said:
I have WT19i and i have unlocked the bootloader official method. Now i flashed .58 firmware and now i wanna update to .62 but i have read somewhere that after unlocking bootloader if u update the phone gets brick.
So any solution?
If i flash .62 firmware directly then would i get root access too?
cause i have root access in .58
Click to expand...
Click to collapse
If you have stock kernel, just relock the bootloader. Making update directly from phone with unlocked bootloader causes brick indeed.
First relock the bootloader, then make update directly from the phone(3G or WiFi) to .62.
Relocking is written in my tutorial, check there if you need help how to do it.
If I relock bootloader, the process perform a wipe same as when I unlock via Sony Official Method ?
I want relock my bootloader, but with no wipe =D
(using stock kernel and stock .58FW)
Dont forget that wipe is best thing what you can do before upgrade to ics
Sent from my ST15i using XDA
I have Rage Kernel installed, so now what to do?
Or shall i flash a custom rom?
and one more thing, if i install custom rom then would i be able to upgrade to ics easily?
converse5 said:
I have Rage Kernel installed, so now what to do?
Or shall i flash a custom rom?
and one more thing, if i install custom rom then would i be able to upgrade to ics easily?
Click to expand...
Click to collapse
Your question is already answered, on the ICS stuff. Reload original firmware just to be sure prior update, always perform clean wipe when shifting ROMS so as to avoid un-pleasant experience and make most of it.

Safe Bootloader Relock

I want to relock my bootloader to have the feel of Stock ROM once again. But I'm scared s**tless that I may screw up my neo. Currently I'm using Xperia Pureness ROM with suave kernel. What are the steps I should do to make sure that everything will go smooth. Your advice will be greatly appreciated.
No need to relock bootloader to use stock rom.
In case you really want it, for some unkown reason, flash stock rom and then relock your BL(depending on how you unlock it of course).
Do not relock your bl while having custom kernel in it.
Madfysh said:
No need to relock bootloader to use stock rom.
In case you really want it, for some unkown reason, flash stock rom and then relock your BL(depending on how you unlock it of course).
Do not relock your bl while having custom kernel in it.
Click to expand...
Click to collapse
So sir I have to flash the stock rom then, relock using flashtools. then root, install cwm, recover Nandroid back up that i have when I had the stock ROM running.
jogen1980 said:
So sir I have to flash the stock rom then, relock using flashtools. then root, install cwm, recover Nandroid back up that i have when I had the stock ROM running.
Click to expand...
Click to collapse
The important thing which madyfish mentioned is "do not lock your bootloader with a custom kernel".
Exercise caution.
Sent from my MT11i using Tapatalk 2
Thank a lot guys... just did it...

[Q][XU] A few (another) questions

Hello everybody! I'm about to buy an Xperia U, and I have a few questions about bootloader, CWM and phone models.
I used to have a SGM which didn't have bootloader, locked and unlocked stuff, so i'm kinda lost here.
1-I see that there are some tutorials to unlock bootloader. Ok, if I unlock it, will there be any differences? Is it really needed?
2- There is CWM for locked bootloaders, but if i'm gonna flash some ROM, it will have to be for locked bootloaders or I can use any ROM after having CWM?
3- CWM backups Stock ROM?
4- Any physical differences between St25a and St25i? Can I flash a St25a ROM in a St25i phone?
5- If I update Xperia U from GB to ICS via official sony software, I can unlock bootloader after updating or I need to do it while on Gingerbread? Or I'll have to unlock bootloader while on Gingerbread and then flash official ICS ROM via Flashtool?
I guess that's it, if I remember something more i'll ask.
Thanks in advance
Sorry for my english
EDIT: Wait, Titanium Backup doesn't work on locked bootloader?
Trublood_ said:
Hello everybody! I'm about to buy an Xperia U, and I have a few questions about bootloader, CWM and phone models.
I used to have a SGM which didn't have bootloader, locked and unlocked stuff, so i'm kinda lost here.
1-I see that there are some tutorials to unlock bootloader. Ok, if I unlock it, will there be any differences? Is it really needed?
2- There is CWM for locked bootloaders, but if i'm gonna flash some ROM, it will have to be for locked bootloaders or I can use any ROM after having CWM?
3- CWM backups Stock ROM?
4- Any physical differences between St25a and St25i? Can I flash a St25a ROM in a St25i phone?
5- If I update Xperia U from GB to ICS via official sony software, I can unlock bootloader after updating or I need to do it while on Gingerbread? Or I'll have to unlock bootloader while on Gingerbread and then flash official ICS ROM via Flashtool?
I guess that's it, if I remember something more i'll ask.
Thanks in advance
Sorry for my english
EDIT: Wait, Titanium Backup doesn't work on locked bootloader?
Click to expand...
Click to collapse
1.Unlocked Bootloader is not needed unless you are to install custom roms,kernels and stuff.It doesn't make difference in performance.
2.NO,you can only use roms which are for locked bootloaders.
3.It backups all the data of stock rom.if you want to revert to stock rom again you will have to flash it.
4.Don't know about physical diff,and also not sure about flashing st25a on st25i.it may harm your handset.but only difference is in baseband.
5.you can unlock whenever you want.But I guess once you unlock bootloader you can't use pcc or sus.(pc companion and sony update service) for updating your phone.But again,you can relock your bootloader anytime.
If you are going to flash it via flashtool you will need to unlock the bootloader first.
Told you all I know.if I helped anyhow hit thanks.
I am also a noob.so,if I am wrong anyone can correct me.
Trublood_ said:
Hello everybody! I'm about to buy an Xperia U, and I have a few questions about bootloader, CWM and phone models.
I used to have a SGM which didn't have bootloader, locked and unlocked stuff, so i'm kinda lost here.
1-I see that there are some tutorials to unlock bootloader. Ok, if I unlock it, will there be any differences? Is it really needed?
2- There is CWM for locked bootloaders, but if i'm gonna flash some ROM, it will have to be for locked bootloaders or I can use any ROM after having CWM?
3- CWM backups Stock ROM?
4- Any physical differences between St25a and St25i? Can I flash a St25a ROM in a St25i phone?
5- If I update Xperia U from GB to ICS via official sony software, I can unlock bootloader after updating or I need to do it while on Gingerbread? Or I'll have to unlock bootloader while on Gingerbread and then flash official ICS ROM via Flashtool?
I guess that's it, if I remember something more i'll ask.
Thanks in advance
Sorry for my english
EDIT: Wait, Titanium Backup doesn't work on locked bootloader?
Click to expand...
Click to collapse
1. Leave it locked, safer until you get used to messing around with the device.
2. You can only use Rom's for locked bl.
3. Yes, with all your apps and data.
4. I have st25a on my st25i, no hardware difference.
5. Unlock bootloader on 2.3 or 4.1, you can only root with ICS afaik.
Also be aware that most sim locked Xperias cannot unlock bootloader ever, get yourself a sim free device if want unlocked bl.
Sent from my ST25i using xda app-developers app

[Q] Stock rom from CM

Hi!
I have only a little question. I have CyanogenMod 9 on WT19i (LiveWithWalkman). Of course I have unlocked bootloader. I want to go back to stock ROM and unlock bootloader. I have to only flash old ftf .62 and flash relocking file or it is more complicated?
Vynikal said:
I have CyanogenMod 9 on WT19i (LiveWithWalkman). Of course I have locked bootloader.
Click to expand...
Click to collapse
No you don't... You don't have a locked bootloader...
I don't think there is any CM ROM for Xperia active with locked bootloader...
If it exist do you mind passing the link for it
BTW running CM on stock kernel too bad
Sent via 'rooted' BEETEL landline
Vynikal said:
Hi!
I have only a little question. I have CyanogenMod 9 on WT19i (LiveWithWalkman). Of course I have locked bootloader. I want to go back to stock ROM and unlock bootloader. I have to only flash old ftf .62 and flash relocking file or it is more complicated?
Click to expand...
Click to collapse
You are mistaking with the meaning of unlock/locked boot loader. Phone comes with locked boot loader then it is unlocked for full throttle. If u want to go back to stock u dont have to relock the boot loader again. Just flash any ics kernel & then stock rom. Or u dont have to flash a kernel if u are gonna flash a ftf
Sorry!
Sorry. Very stupid mistake . UNLOCKED
Vynikal said:
Hi!
I have only a little question. I have CyanogenMod 9 on WT19i (LiveWithWalkman). Of course I have unlocked bootloader. I want to go back to stock ROM and unlock bootloader. I have to only flash old ftf .62 and flash relocking file or it is more complicated?
Click to expand...
Click to collapse
Yes just flash the ftf and if you want to root, just flash a prerooted kernel for gingerbread, but stock kernel will be flashed with the ftf :good:
Thread moved. All questions belong in Q&A not General.
Thanks
AvRS

Atrix with bootloader lock

I have an atrix with root (Android 2.3.4 GB)
I wanted to know if I can put the stock rom based?
Without bootloader unlocked and without recowery mod, is it possible?
Why? If you have locked bootloader and no custom recovery, you should have the stock ROM already. All you need to do is unroot and you'll be completely stock.
ravilov said:
Why? If you have locked bootloader and no custom recovery, you should have the stock ROM already. All you need to do is unroot and you'll be completely stock.
Click to expand...
Click to collapse
I would flash an CUSTOM ROM based on STOCK ROM
In that case, no. There is nothing you can flash with a locked bootloader except a SBF which can be risky.
ravilov said:
In that case, no. There is nothing you can flash with a locked bootloader except a SBF which can be risky.
Click to expand...
Click to collapse
Uff :/
Thank's
Thread closed since the original question is solved now.

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