[Q] Flashing custom ROM with locked bootloader (SE Arc)? - Xperia Arc Q&A, Help & Troubleshooting

Hello!
Is it possible to flash a custom ROM (Cyanogenmod) on the Arc (lt15i) without unlocking the bootloader? I was about to flash the ROM, but then remebered the bootloader.. I have downgraded to .42 from .62, and was able to root without problems.
I will use CWM to flash it, but first I need to know if this is possible with the bootloader locked.
Any help will be greatly appreciated!

You need to unlock your bootloader to flash Cyanogen.
Sent from my LT18i using xda premium

5pki66 said:
Hello!
Is it possible to flash a custom ROM (Cyanogenmod) on the Arc (lt15i) without unlocking the bootloader? I was about to flash the ROM, but then remebered the bootloader.. I have downgraded to .42 from .62, and was able to root without problems.
I will use CWM to flash it, but first I need to know if this is possible with the bootloader locked.
Any help will be greatly appreciated!
Click to expand...
Click to collapse
if you need to understand every thing just read the following post
http://forum.xda-developers.com/showthread.php?t=1133650

Related

[Q] How to backup my stock rom

I just got my Arc S, and i want to check out few different custom roms. I was planing on rooting the device with Easy rooting toolkit, so the question is, how can i backup my stock rom and reflash it, if i ever need it for warranty issues? (Also maybe to get the official 4.0 update next year )
On my previous phone (HTC Desire) it was pretty easy, by restoring the Nandroid backup that i created after rooting the device. How about the Xperia? Is there something similar?
And while we are here, any suggestion for some stable custom roms for the Arc S? Thanks
If you only want to root your device, you can simply unroot the device.
But you don't really have to, when you update your device using PCC or SEUS, the root is gone.
http://forum.xda-developers.com/showthread.php?p=18879974#post18879974
If you decide to unlock your bootloader to flash custom kernels/ROMs, you have to relock it, when you want to update your firmware using PCC or SEUS.
http://forum.xda-developers.com/showthread.php?t=1134335
And which custom ROM you like is your decision, but I'm still a CM7 fan.
I have root, if I want to return to stock ROM (without root) I can just use SEUS to update my phone and the root is gone?
hdplsa said:
I have root, if I want to return to stock ROM (without root) I can just use SEUS to update my phone and the root is gone?
Click to expand...
Click to collapse
If your bootloader is locked yes.
I rooted my arc with EasyRooting toolkit,
How do I know if my bootloader is locked or not?
Edit: I checked by the service info, it says
Rooting status:
Bootloader unlock allowed: No
I am guessing that means my bootloader is locked?
Aiceball said:
I am guessing that means my bootloader is locked?
Click to expand...
Click to collapse
Yes, it is.
And if you root, it doesn't, mean you've a unlocked BL.
Btw, you can't unlock your BL using the official method.
If you still want to unlock your BL, contact Jinx13.

Some questions before I unlock the Bootloader on my play

After my update from .42 to .69 I lost root access.
Now 3 weeks later I can't work without root. So I decided to unlock the Bootloader on my R800i.
How I get then the root access? Is it already there when I unlock the BL?
Or is there anything to do then, to get root.
How can I update to ICS?
With SEUS or normaly with the phone? And is the BL then even unlocked and will I have root access?
And is there a german manual how to unlock the BL?
To unlock the bootloader go here.
For root the only way I know for firmware .62 and up is by flashing a pre-rooted kernel like Doomkernel.
Random.Guy said:
To unlock the bootloader go here.
For root the only way I know for firmware .62 and up is by flashing a pre-rooted kernel like Doomkernel.
Click to expand...
Click to collapse
Yep that is the only way
Sent from my R800i using Tapatalk
U could flash a older version of the software after u bl unlock to.42 to root. After that u could flash any ics. Rom. U cannot fota to official Ics after bl unlock
Sent from my Xperia Play using XDA
To update to ICS you have to flash a ICS Kernel/ROM. I suggest you either CyanogenMod 9 or Sony Official Beta. To flash CyanogenMod download the package from the official thread, flash the boot.img with <<fastboot flash boot boot.img>> then enter in recovery and flash the .zip package that has to be on your SD card.
To flash Sony Beta follow instructions in the topic but instead of the original boot.img flash DoomLord Advanced Kernel to gain root access.

After unlooking bootloader, how to root?

hey folks,
I will tomorrow unlock my bootloader on my R800i, and I have a few questions before I do it.
- How to Root then? I will not flash a new kernel, I only want root, because the update to ICS is only on June 2012.
- How to flash? I read always don't flash via CWM only Flash via Recovery?
- Can I flash then a original ICS Update from Sony, because I can't use then the OTA-Update to ICS from Sony or can I lock the BL again, and then update OTA?
once u unlock your bootloader, u cant get ics ipdate.. u need to relock back using .ftf file with flashtool.. go n search.. im wondering what the point u unlock your bootloader without install custom rom or kernel
u can use superoneclick to root your phone.. i hope this help u
No I can't because I have .69 and this is unrootable.
Then u need a custom kernel mate... they are pre-rooted
Sent from my Xperia Play using XDA
then.. you need to flash custom rom that support autoroot

[Q] cant root with locked bootloader :/ ?Help

hi..
i wanted to root and then flash a costum rom on a xperia arc but im not getting root first...i used 2 methods for the locked bootloader the doomlord v1 and the Root_Exploit_OneClick both of these show me errors and the phone cant get root,i turned off every another process in the pc and the antivirus and still nothing...pls help me to root it...it is with locked bootloader..
Edit( i rooted it when i flashed a ready to root stock ics firmware and then with one click root method)
first of all you cant install a custom ROM with a locked bootloader... and the reason why your not getting a root is that your on .62 firmware and you can only root on .42 firmware... (NOTE: android version 2.3.4)
MrModMan said:
first of all you cant install a custom ROM with a locked bootloader... and the reason why your not getting a root is that your on .62 firmware and you can only root on .42 firmware...
Click to expand...
Click to collapse
i have this version 4.1.b.0.431...what should i do to root with this firmware?
You have ICS https://www.google.com.au/#hl=en&sc...qf.,cf.osb&fp=c72d84806ae8a6&biw=1366&bih=667 that should help you
y the way there are 2 ways to root .431(4.0.4)
1) flash the .431 file and then flash the stock kernel of .562 ftf(i.e flash 4.0.4 and the flash only the kernel of 4.0.3) and then use doomlord one click method
2) flash a ready to root ftf file that already has the compiled things together.
(by the way, why dont you unlock your bootloader? because if anything goes extremely wrong it can only be corrected if you have an unlocked bootloader. and unlcoking bootloader is not risky infact it can be reocked again it will give you more choice to choose from various roms and kernels)
and note these methods work on unlocked bootloaders only.
these threads will help youon locked bootloader
for 4.0.3 http://forum.xda-developers.com/showthread.php?t=1600728
for 4.0.4 http://forum.xda-developers.com/showthread.php?t=1683189
you can root your phone using This method .

[Q] [probably important] Does this way work ?

Since firmware .62 can't be rooted without unlocking bootloader.
I did unlock the bootloader and rooted the system by flashing RootXperia zip
And now I am thinking of re-locking the bootloader using this method
Will I still be able to use root permissions after re-locking ?​
Well it should I don't see why not but if It don't you can flash to I think .58 which is rootable (correct me if I'm wrong) and then relock your BL and then root it and do a OTA root keeper and you should be set
sent from my Sony Ericsson Xperia Play™ Running Slimbean 3.0 using Tapatalk 2™

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