Develop Bugs

Bring me up to speed please

I've come into possession of an Arc that belongs to a friend. She says she's been having error messages & force closes (although it's done nothing but run perfectly for me so far today - sod's law!).
It's running 2.3.2 Build 3.0.A.2.181 and after a quick look through the dev and general section here, I gather I can root it using Gingerbreak, and install a standard 2.3.3 rom.
* Any known issues with (2.3.3) 4.0.A.2.368 or 3.0.1.A.0.145?
* Is there any reason for me not to go with 4.0.A.2.368?
* Also, is there any Nandroid or equivalent for the Arc yet?
Ideally I want to root, back up the current rom (as it has all my friend's preferred setup), and then install an updated rom.
* If there's no Nandroid then I assume I can just downgrade back to 3.0.A.2.181 by flashing that rom?
It all seems straightforward and I'm far from new to rooting/flashing (HTCs mainly), but just thought I'd check in case I'd missed something, as I don't have time to properly read all the Arc forums before I deal with this phone tonight!

The Namaste guide is worth reading and should help.
Sent from my LT15i using XDA App

XperienceD said:
The Namaste guide is worth reading and should help.
Sent from my LT15i using XDA App
Click to expand...
Click to collapse
I did read that, and it's quite comprehensive so that's why I feel confident in the process. What I really need to know is, are there any show-stopping bugs in the newer roms? I don't want to go through the hassle of rooting and flashing a new rom if there are obvious problems with it?
Also no mention in the guide of nandroid/backups (unless I'm being blind - very possible!) :-D

setspeed said:
Also no mention in the guide of nandroid/backups (unless I'm being blind - very possible!) :-D
Click to expand...
Click to collapse
Might be an idea to find out if the bootloader can be unlocked first and unless it was bought simfree it probably can't unless you pay for it.
Sent from my LT15i using XDA App

XperienceD said:
Might be an idea to find out if the bootloader can be unlocked first and unless it was bought simfree it probably can't unless you pay for it.
Sent from my LT15i using XDA App
Click to expand...
Click to collapse
It's a TMobile phone, although unlocked since my friend uses a 3 sim, and I've had a Vodafone sim in it all day.
I've been reading a bit more and apparently the Arc doesn't have a recovery partition, so no ClockWorkMod - how would unlocking the bootloader help me with back ups?
I've only ever used Nandroid as part of CWM (as I said before, I'm an HTC guy).
EDIT: Forget that last part, of course the bootloader would need to be unlocked, I'm being der....
In which case I guess my only options are to use something like Titanium (once it's rooted) to backup apps, and then restore later on.

My bootloader isn't unlocked so can't really advise on that front, and as I only really need to root I'm not too fused for now, but would make life a tad easier I guess.
Sent from my LT15i using XDA App

setspeed said:
It's a TMobile phone, although unlocked since my friend uses a 3 sim, and I've had a Vodafone sim in it all day.
I've been reading a bit more and apparently the Arc doesn't have a recovery partition, so no ClockWorkMod - how would unlocking the bootloader help me with back ups?
I've only ever used Nandroid as part of CWM (as I said before, I'm an HTC guy).
EDIT: Forget that last part, of course the bootloader would need to be unlocked, I'm being der....
In which case I guess my only options are to use something like Titanium (once it's rooted) to backup apps, and then restore later on.
Click to expand...
Click to collapse
Arc does not have a Recovery partition but using Custom Kernel our Developers has made CWM Recovery possible. There is a backup and restore function. But only work with unlocked bootloader. You would need to use Fastboot Mode and flash the kernel.
Custom Kernel (Recovery is included): http://forum.xda-developers.com/showthread.php?t=1172885
More info about Recovery: http://forum.xda-developers.com/showthread.php?t=1044874

[Q] Easiest way to root a unlocked bootloader Arc running on 2.3.3 ?

If you have an Xperia Arc version 2.3.3 unlocked bootloader, you can't root using Gingerbreak or Super1click as the update, unwillingly, made sure that stuff doesn't work anymore.
The only way to root, as far as I know, is flashing -> getting 2.3.2 ROM -> root from their -> update.
I can not use that way as everytime I try to update in the last step it wont turn on again after reboot (so I have to flash using http://forum.xda-developers.com/showthread.php?t=1126358, though i'm sure it'll work for most of you.
Question being: Is there atm really no alternative to root for me then? I'm kinda desperate, i've been looking on XDA a lot of hours and this is rly my last hope to get this over with..
thx in advance!

As you said yourself.. You have an unlocked bootloader.. so you don't have to more like you cannot use the FOTA technique cos OTA update bricks the phone..
Simply flash one of the prerooted kernel like DoomLord Kernel.. Should do it .. Or if you want the stock kernel then Serach the forums for something like "Root 4.0.A.2.368" They will usually specifically say that you need unlocked bootloader..

[Guide] All in one 'Namaste guide' to Bootloader unlocking, Rooting, Flashing & more

thx for the replies.
though, I've read that whole guide before, problem is:
"Ques – Ok. So quickly tell me how to unlock my Xperia Arc’s bootloader and install a beautiful Custom ROM.
Not so fast dear. I described a deal about bootloader and benefits of its unlocking but let’s get practical. There are two disadvantages of unlocking the Xperia Arc’s bootloader.
As per my knowledge, till date, there is no Custom ROM designed for your Xperia Arc. So, it’s useless to unlock your bootloader. "
So, if a "non stock kernel" means the same as a "custom ROM", where do I find it? i dont want the original one as that1 is outdated. I know how to flash my phone, but only with delivered folders (which are always X10)
with kind regards,
Tom

Emissia said:
If you have an Xperia Arc version 2.3.3 unlocked bootloader, you can't root using Gingerbreak or Super1click as the update, unwillingly, made sure that stuff doesn't work anymore.
The only way to root, as far as I know, is flashing -> getting 2.3.2 ROM -> root from their -> update.
I can not use that way as everytime I try to update in the last step it wont turn on again after reboot (so I have to flash using http://forum.xda-developers.com/showthread.php?t=1126358, though i'm sure it'll work for most of you.
Question being: Is there atm really no alternative to root for me then? I'm kinda desperate, i've been looking on XDA a lot of hours and this is rly my last hope to get this over with..
thx in advance!
Click to expand...
Click to collapse
I have the same problem with my Neo. I've tried flashing 2.2.2, then rooting with Flashtool (just click Xperia X10), but this doesn't work, and after relocking the bootloader and updating, the phone is bricked as well. Tried this like 5 times.
I think I'll just wait for 2.3.4 as my main reasons to root are making screenshots and removing bloatware. 2.3.4 adds screenshots, and currently, my ROM is not totally full.

Same here, just wanna get that bloatware off, starting to look like i'm gonna wait as well... this has already taken enough hours away from me

Emissia said:
Same here, just wanna get that bloatware off, starting to look like i'm gonna wait as well... this has already taken enough hours away from me
Click to expand...
Click to collapse
Flash a prerooted image or relock the bootloader and use the more lengthy method.

Emissia said:
thx for the replies.
though, I've read that whole guide before, problem is:
"Ques – Ok. So quickly tell me how to unlock my Xperia Arc’s bootloader and install a beautiful Custom ROM.
Not so fast dear. I described a deal about bootloader and benefits of its unlocking but let’s get practical. There are two disadvantages of unlocking the Xperia Arc’s bootloader.
As per my knowledge, till date, there is no Custom ROM designed for your Xperia Arc. So, it’s useless to unlock your bootloader. "
So, if a "non stock kernel" means the same as a "custom ROM", where do I find it? i dont want the original one as that1 is outdated. I know how to flash my phone, but only with delivered folders (which are always X10)
with kind regards,
Tom
Click to expand...
Click to collapse
Hmm.. Only non stock kernels yet around are the DoomLord and CM (FreeXperia) kerenls.. Check the development forums for them..
The Stock aren't really "outdated".. These custom kerenels are based on the original stock code with a few features enabled.. So don't expect android 2.3.4 from them or anything..
As for rooting issues.. Follow the Namaste guide and a few posts in the development forum bout rooting arc properly and carefully.. Noting what is Locked and Unlocked and which method works where.. And it won't take more than 15 minutes to setup everything..

Bunch of questions, terrible newbie

Okay. Here to learn as much as I can, if you can number your responses with the questions and add whatever you believe is best. Thanks. ^^
Bootloader:
1. Do you unlock a bootloader JUST so you can load custom roms?
2. Is the method of unlocking the bootloader on SE's website the best way?
3. Do I need to have the SIM unlocked before unlocking the bootloader?
4. What is the point of custom roms?
Rooting:
5. Can I remove the apps here; http://forum.xda-developers.com/showthread.php?t=1046699 just by having root access? No special tools needed?
6. Are there other good methods of optimizing things like battery life specific to the xperia play?
Sim Unlocking:
7. Is there any method of doing this without a cost?

I'm on an R800x, which doesn't have sim card anything, so I'll just answer the questions I know.
1. Unlocking the bootloader allows you to install 3rd party software that overwrites the stuff that is part of the boot process. This pretty much refers to the kernel, for the Play. Certain roms, such as MIUI and CM7 require you to use a kernel different from stock, and since you need a different kernel, you must have an unlocked bootloader. As far as I know, that's the only real benefit for an unlocked bootloader, from a user standpoint.
4. There are many things that custom roms offer, as opposed to the stock your phone came with. This can range from a new UI, new apps, tweaks to system files, etc. Generally speaking, developers strive to make their custom roms operate better than stock. For more information on this point, I would suggest you check out some of the custom rom threads, just to see what they've changed from the stock rom.
5. You will need root, but you will need something with which to remove the apps. The best app to use, in my opinion, is Titanium Backup. Not only will it allow you to remove system apps, but it will also back up those and user apps, all for free. Unless you buy the pro key, that is.
6. As far as specific tips for the Play, I would recommend rooting so that you can disable the auto brightness. While auto brightness is desirable in most phones, the Xperia Play (And other Xperia devices, I think) are almost constantly shifting the brightness, to where a slight tilt of the hand can make the screen dim or brighten. I'm sure that can't be good on the battery. Generally speaking, though, apps such as Juice Defender and Battery Defender have profiles or just general settings to adjust data flow and many other options that can significantly increase battery life.

To the best of my knowledge
2. Is the method of unlocking the bootloader on SE's website the best way?
Click to expand...
Click to collapse
Yes, IMO.
3. Do I need to have the SIM unlocked before unlocking the bootloader?
Click to expand...
Click to collapse
No, but you can check if you can unlock following the instruction on SE's site:
1. First, you should confirm that it is possible to unlock the boot loader of your phone by checking the service menu. In your phone, open the dialler and enter *#*#7378423#*#* to access the service menu.
2. In your phone, tap Service info > Configuration > Rooting Status. If Bootloader unlock allowed says Yes, then you can continue with the next step. If it says No, or if the status is missing, your device cannot be unlocked.
Note that unlocking void your warranty.
7. Is there any method of doing this without a cost?
Click to expand...
Click to collapse
Not that I know of.

Awesome guys, Thanks a bunch.

Unless you're really tight on space (which shouldn't normally happen if you've done the adb setinstalllocation trick and moving apps to sdcard), i would suggest freezing the apps instead of removing them especially if you're sticking with stock. This would make it a lot easier to move to the next official OS upgrade instead of a mad scramble to find the stock apps and reinstall them. The pro version of Titanium backup and SystemCleanup has the freeze function. I've freezed a lot of crap on my phone and it makes a world of difference wrt. boot time and general performance.

Unlock boot loader is very good allows you to flash custom kernel and overclock

@JulianPaul/Vabene2002: Not sure if im sticking with stock, My model is R800AT. So not sure of my options yet. Im still trying to absorb as much as I can.
Wonder if I asked some more questions if they'd be answered.
8. Is there any recovery utility WITHOUT unlocking the bootloader? Say I mess something up with my root, Can I recover back to an original ROM?
9. Can I back up my current running ROM as soon as I get my phone so that I may return it to that state?
10. If you need to change your kernel to match a modified ROM; Your current ROM wont support it, so you need to change kernel AND ROM at the same time? Otherwise your phone wont boot?
11. Any decent links for rooting an r800at?
12. Is gingerbread the latest version of android an xperia play can run and have jailbroken?

Would having root access void the warranty? I want to remove some pre installed apps so is there a way to do this without voiding the warranty?
Thanks
Sent from my R800i using XDA App

Yes, it will.
But if you just recover to a stock ROM, then its like you never rooted.
Thus, warranty reinstated.

Nah, don't want to risk it yet. May never root this phone actually...
Sent from my R800i using XDA App

Im going to root mine as soon as it arrives. Lol.
Not to diminish your opinion, If you dont know exactly what you're doing, it could get ugly.

I rooted my old ZTE blade but this phone is just... different. I mean it's probably gonna Get ICS anyways and if I were to root I'd probably need a very simple guide.
Sent from my R800i using XDA App

SuperOneClick is about as simple as one could imagine.
Sent from my R800x using xda premium

Trygon said:
SuperOneClick is about as simple as one could imagine.
Sent from my R800x using xda premium
Click to expand...
Click to collapse
Do you know the latest version of android this works on? Looks like 2.2.2 to me.

SirRudolph said:
Do you know the latest version of android this works on? Looks like 2.2.2 to me.
Click to expand...
Click to collapse
like 4.0 it uses different exploits for different versions. gibgerbreak and zergrush are 2 of them
Fma965 - Forgottencoders.co.uk
Want to make me a banner? PM me

8. Is there any recovery utility WITHOUT unlocking the bootloader? Say I mess something up with my root, Can I recover back to an original ROM?
Click to expand...
Click to collapse
Yes, you can install Clockworkmod recovery from the market, there is an auto installer for xperia. That can be done without unlocking the bootloader but you must be rooted.
9. Can I back up my current running ROM as soon as I get my phone so that I may return it to that state?
Click to expand...
Click to collapse
I believe a nandroid backup on CWM would do the trick, but I am not sure. I simply made backups of everything I uninstalled so I could revert it.
10. If you need to change your kernel to match a modified ROM; Your current ROM wont support it, so you need to change kernel AND ROM at the same time? Otherwise your phone wont boot?
Click to expand...
Click to collapse
Yes. kernel flashing on locked bootloaders brick your phone. and AFAIK, no custom rom except those based on stock have touchpad support.
11. Any decent links for rooting an r800at?
Click to expand...
Click to collapse
I have an r800a, not sure about the differences regarding r800at, check this thread:
http://forum.xda-developers.com/showthread.php?t=1294129
12. Is gingerbread the latest version of android an xperia play can run and have jailbroken?
Click to expand...
Click to collapse
If you keep it stock, yes, 2.3.4. There is FreeXperia rom that is 2.3.7 as well.
On the forum you will find links to ICS based roms, SE leaked and AOSP. Both are WIP, I believe.
I've read somewhere that Sony will release ICS for the xperia 2011 line around April.

pretty sure flashing kernels on locked bootloaders doesn't BRICK your phone. It won't allow the kernel to be flashed as you can't use Fastboot only flashmode (official signed Roms only )
Fma965 - Forgottencoders.co.uk

fma965 said:
pretty sure flashing kernels on locked bootloaders doesn't BRICK your phone. It won't allow the kernel to be flashed as you can't use Fastboot only flashmode (official signed Roms only )
Fma965 - Forgottencoders.co.uk
Click to expand...
Click to collapse
Doesn't brick as in "turns your phone into a very expensive paper weight", but your phone will not boot anymore and you will have to flash a stock rom with flashtool to recover.

[PRO] Flash Custom Kernel + ROM and O/C

Hi all, im a newbie here, i bought my Xperia PRO a month ago, and rooted it on Android 4, using a great tutorial in this forum and thanks to other members i got it right and rooted it in my 4 first days of use. But, i now want to upgrade to a Custom ROM and use a custom kernel , to get my phone to a new generation.
And my question now is, how can i flash a Custom ROM (i was thinking of CM9 stable when it comes out), and flash a custom Kernel with it (i was thinking of Ultima V1.4) and then keep my old applications, or most of them.
I have CWM Recovery 5.5.0.4 installed using X-Parts , and also Titanium Backup Pro . My Bootloader is still locked and i have flashtool and all drivers for my phone installed on my PC.
I would be very thankful to anyone that is able to help me do all these, or if needed, recommend me a better Custom ROM and Kernel, and then explain how i can O/C my phone too, and keep if possible most of my apps.
Also, please tell me if i have to install anything else, or if im missing anything.
Thanks in advance.

Hi mate,
First of all, I take it that you know that you have to unlock your boot loader to install custom kernels and some custom rom's. Like CM9 and 10.
ROM Install Instructions
There are normally instructions that are in the first or second post that explain how to install. If there aren't any, I've copied the instructions from maxio1998, so all credits go to him:
1. Download .zip file and place it on SD card
2. Download and flash kernel you like (or not, if you have locked bootloader)
3. Download WiFi Modules of chosen kernel and place them on sdcard
4. Go to CWM Recovery.
5. Wipe everything! (This means everything but the SD card, or you'll use all you files)
6. Flash zip with ROM
7. Flash zip with WiFi modules
8. In CWM go to "Advance" and fix permissions.
9. Reboot and enjoy [~xDevilCharged~] and PentaPowerful~ Jelly Sandwich!
Link to original post: http://forum.xda-developers.com/showthread.php?t=1836993
Kernel Install instructions
To keep it simple, heres a program that doomed151 made. It flashes the .img without having to use command prompt: http://forum.xda-developers.com/showthread.php?t=1551073
Right, onto keeping your apps. As you need to wipe everything to install a new ROM, you can't keep your apps without backing them up. Titanium backup is the best option, and you've bought it, even better :victory: The wipe will not delete the backups from the SD Card so just place them somewhere on there.
You can use any overclocking app from the market as long as you let it use superuser or supersu. Don't recommend passing 1.3, it gets very hot and the cpu will burn out quicker. (Yeah, I know i've overclocked mine to 1.5, but it gets very hot and runs out of battery quickly)
As you've already got CWM installed, you'd be better doing a full nandroid backup, just in case you decide to revert back to stock, you have all your apps installed
Unfortunately, I'm using the arc, so I can't recommend any kernels or ROM's to you. Sorry.
If I've missed anything you need to know, just let me know. I'll try to help

Awesome! Thank you very much my friend, very detailed and nice guide. I'll wait for CM9 stable to be released for my phone an then ill try it out.
Thanks again.
Also, I've searched enough, to believe that cyanogen mods, are the best and most recommended custom ROMs, about the kernel, I aint so sure but ill see what other user's might say.
Sent from my MK16i using xda premium

we got nothing recommended custom kernel for xperia pro cyanogen rom as custom kernel for cyanogen made by FXP already stable.
recommended custom kernel for GB and ICS stock or stock based rom > http://forum.xda-developers.com/showthread.php?p=24867340#post24867340

If i remember right, CM9.1 (stable) has not yet been released for iyokan (MK16i). So that means i have to wait. Also, i can flash a ROM and use a kernel other than the ROM's default one, right? (i want CM9.1 with Ultima V1.4 Kernel)
And one more thing, i have moved all apps to the SD, what will happen to the files there? Will they remain?

DeejayTelis said:
If i remember right, CM9.1 (stable) has not yet been released for iyokan (MK16i). So that means i have to wait. Also, i can flash a ROM and use a kernel other than the ROM's default one, right? (i want CM9.1 with Ultima V1.4 Kernel)
And one more thing, i have moved all apps to the SD, what will happen to the files there? Will they remain?
Click to expand...
Click to collapse
I think that you have to use the cm kernel (fxp kernel). Could be wrong though, not really looked into it.
Any apps that you have installed on your phone will be deleted. You have to back them up and then restore them. It doesn't matter where they are installed
Sent from my Xperia Arc

so, how can i be sure if it is possible to flash CM9 with Ultima Kernel?
Also, do i have to do anything with google apps? And flash another baseband or something like it?
And last but not least, i have installed CWM using X-Parts, will this affect anything?

DeejayTelis said:
so, how can i be sure if it is possible to flash CM9 with Ultima Kernel?
Also, do i have to do anything with google apps? And flash another baseband or something like it?
And last but not least, i have installed CWM using X-Parts, will this affect anything?
Click to expand...
Click to collapse
Sorry for late reply, just look up the thread again.
Best thing you could do is ask a question the Ultima Kernel thread and hope you get a response. But I think that it will be for stock only, (I think they need different things in them....) but im not a dev, I don't have the patience..... :laugh:
You might have to flash google apps. Just use CWM in the custom kernel you choose. They will be a link in the bottom of the first post to the google apps download.
No need to flash another baseband or owt like that. When you flash the full zip of CM9 in CWM it will add and edit everything you need.
CWM from X-Parts will not have any effect on anything after you flash a different kernel. It will disappear like it was never there.
Hope I'm able to help again Need anything else, just post again, I will pick it up

Good work Jon565G

Not just good, excellent work!
I did it, and flahsed the kernel and all that stuff, now i reinstalled all my apps , and O/Ced at 1.2Ghz , and everything is nice.
But, working on android stuff, makes you want more and more, and as you learn better, that makes you want even more, and now i want to mod another phone.!
I've learned a lot from your help and the help of other members of this forum, and i think i am now ready to "mod" more phone, just for fun.
I already managed to flash an x10 mini with miniCM7 and flash a nAa Kernel, and also flash another x10 mini pro with miniCM7, and probably today ill mod another friend's x10 mini. And later two x8.
Learning, is great, thank you all.
EDIT: I also found out that everything you need is Flashtool, its the best tool out there, it flashes, it installs Busybox, recoveries, it unlocks bootloaders, it roots, it flashes kernels, everything. .Ok you might also need s1tool to check about the semc lock and if you unlocked the bootloader.

ashikonxda said:
Good work Jon565G
Click to expand...
Click to collapse
Thank You. I do try to help when I can
DeejayTelis said:
Not just good, excellent work!
I did it, and flahsed the kernel and all that stuff, now i reinstalled all my apps , and O/Ced at 1.2Ghz , and everything is nice.
But, working on android stuff, makes you want more and more, and as you learn better, that makes you want even more, and now i want to mod another phone.!
I've learned a lot from your help and the help of other members of this forum, and i think i am now ready to "mod" more phone, just for fun.
I already managed to flash an x10 mini with miniCM7 and flash a nAa Kernel, and also flash another x10 mini pro with miniCM7, and probably today ill mod another friend's x10 mini. And later two x8.
Learning, is great, thank you all.
EDIT: I also found out that everything you need is Flashtool, its the best tool out there, it flashes, it installs Busybox, recoveries, it unlocks bootloaders, it roots, it flashes kernels, everything. .Ok you might also need s1tool to check about the semc lock and if you unlocked the bootloader.
Click to expand...
Click to collapse
Cheers
I know, I'm the same. I'll want to go and buy about 10 different android devices just to have a play around and mod them. It's always nice to play around with 2 android devices (Please come back in stock Nexus 7 )
Anyway... I'm just glad that I was able to help to introduce you to the world of android modding.
Have fun, that's what it's all about :victory:
(I had to use multiple programs, my bootloader could only be unlocked my test point. Was locked to T-Mobile. Best use of flashtool is when you've bricked it and need to get it back to stock )

I hope you get back your Nexus 7 then
Yeah, i unlocked my Bootloader using testpoint method too, so i wouldnt get any bricks with FOTA updates. And, i also used to be into such electronic stuff.
And, you didnt just introduced me into Android Modding World, you made me a fanatic Android Modder
Anyway, thank you once more, and yeah, thats the point, the fun about all these stuff

DeejayTelis said:
......... to check about the semc lock and if you unlocked the bootloader.
Click to expand...
Click to collapse
well, from what I've read, in ur Xperia u can simply find out the bootloader status by dialing *#*#7378423#*#* service info> configuration
rooting status
bootloader unlock allow:Yes(if locked)
bootloader unlock:yes(if unlocked)
m havin locked bootloader, so do reply with ur status and confirm this to me and evryone else

ashikonxda said:
well, from what I've read, in ur Xperia u can simply find out the bootloader status by dialing *#*#7378423#*#* service info> configuration
rooting status
bootloader unlock allow:Yes(if locked)
bootloader unlock:yes(if unlocked)
m havin locked bootloader, so do reply with ur status and confirm this to me and evryone else
Click to expand...
Click to collapse
I am not sure, but i believe, that either you have locked or unlocked bootlader, it will always say "Bootloader Unlock Allowed: Yes , or No if its not allowed).
I aint sure, because in CM9.1 i dial it, and i cant get to the Service Settings, so i cannot be sure.
And, as i've found out, you can be sure if you have locked or unlocked bootloader, by running S1tool, and pressing "IDENTIFY" , which will tell you to connect your phone in flashmode (phone off, connect USB while pressing back) , and it will give something like "loader version xXXXXXX" , where the capital X , are numbers, and the small x, is either "R" or "r". If it is a small "r" , that means its unlocked, if its a capital "R" its locked.
If you want to unlock your bootloader in the Xperia Pro, just tell me , and im sure i'll help you out, with a detailed tutorial, without having any problems.
Hope i helped.

DeejayTelis said:
ashikonxda said:
well, from what I've read, in ur Xperia u can simply find out the bootloader status by dialing *#*#7378423#*#* service info> configuration
rooting status
bootloader unlock allow:Yes(if locked)
bootloader unlock:yes(if unlocked)
m havin locked bootloader, so do reply with ur status and confirm this to me and evryone else
Click to expand...
Click to collapse
I am not sure, but i believe, that either you have locked or unlocked bootlader, it will always say "Bootloader Unlock Allowed: Yes , or No if its not allowed).
I aint sure, because in CM9.1 i dial it, and i cant get to the Service Settings, so i cannot be sure.
And, as i've found out, you can be sure if you have locked or unlocked bootloader, by running S1tool, and pressing "IDENTIFY" , which will tell you to connect your phone in flashmode (phone off, connect USB while pressing back) , and it will give something like "loader version xXXXXXX" , where the capital X , are numbers, and the small x, is either "R" or "r". If it is a small "r" , that means its unlocked, if its a capital "R" its locked.
If you want to unlock your bootloader in the Xperia Pro, just tell me , and im sure i'll help you out, with a detailed tutorial, without having any problems.
Hope i helped.
Click to expand...
Click to collapse
I just checked it by myself..
And i hereby confirm that under rooting status, when ur bootloader is locked i says Bootloader Unlock Allowed: Yes and when its unlocked it says Bootloader Unlocked: Yes
:good::good::good:
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EDIT: just learnt it just means fastboot is enabled..
ll get back soon,,

ashikonxda said:
I just checked it by myself..
And i hereby confirm that under rooting status, when ur bootloader is locked i says Bootloader Unlock Allowed: Yes and when its unlocked it says Bootloader Unlocked: Yes
:good::good::good:
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EDIT: just learnt it just means fastboot is enabled..
ll get back soon,,
Click to expand...
Click to collapse
Great, if you need anything else, ill be happy to assist you.

[Q] In need of guidance :)

Hello, and sorry for bugging everyone, but I have somewhat of a problem. I'll just start from the beggining.
First of all I own a SGS II, so I'm used to flashing roms and kernels custom stuff and all...on that. My girlfriend is the one who owns a Xperia Arc S (LT18a, US version if it's relevant or not). And for the live of me, I can't summon the courage to flash it, the process being somewhat different than the flashing of a S2. That's just idiot proof in my opinion, can't go wrong. I'm seeing all over the place guides and stuff for flashing a Xperia Arc S, and don't really know wich one is good/bad etc. So...the actual questions :
1. Where can I find the stock firmwares for Xperia Arc S ? I was hopping on a website something like sammobile for samsung, where I can find every release etc.
2. She now has 2.3.4 (I think not 100% sure) build 4.0.2.A.0.62 and from what I heard that cannot be rooted, or it involved something like unlocking the bootloader or something like that, safe to say that kinda freaked me out a bit.
3. I'm guessing that this build 62 is like on my samsung, where different stock rom's are differentiated by letters (eg. XXLPG, XWLPQ etc) so, someone please confirm that.
4. Is there any noticeable difference between these gingebread builds, cause if build 62 can't be rooted, I'll downgrade to previous build that can be more easily rooted.
5. I really need a idiot proof guide to flashing this thing. She has no warranty on it and I really don't want to mess it up
6. And last (finally, I know ) some links for safe versions of flashtool (equivalent of odin from what I understand) and firmwares, stuff I need to root it etc.
I apologise for such a long post but this stuff is pretty overwhelming for me. Also I apologise for spelling errors (english is not my first language)

Wow, the things we do for love...
OK, here's a quick run-down of how it works.
Firstly the bootloader thing: -
The bootloader is where the "kernel" sits. If you unlock the bootloader then you can pretty much put anything on the phone.
You can flash a custom kernel, and from there on you can use ClockworkMod recovery the same way you do on your Samsung.
(
custom kernels have ClockworkMod recovery built into them since the XPERIA doesn't have a "/recovery" partition for the standard ClockworkMod recovery.
If that didn't make sense then here's a translation "There's no special space for CWM recovery on Sony phones! So custom kernels have CWM recovery built in for easy access."
When one of these kernels starts up the phone there's a point where the hardware buttons light up, and the LED flashes purple. If you press "volume down" at this point then the kernel starts up ClockworkMod recovery instead of booting the phone.
Most roms come with their own kernel that you can use like this. The XPERIA is different to the SGS phone because you can't flash a kernel from the phone itself. You need an unlocked bootloader and fastboot to flash a kernel.
)
So unlocking the bootloader is a good idea, but only after you've made a backup of all your stuff off the memory card.
Here's a really good thread that brings together all sorts of pieces of information that you might need to root the phone - http://forum.xda-developers.com/showthread.php?t=1653188
OK, so that's the unlock thing, and the kernel thing. Once the kernel has CWM recovery built in you can pretty much flash any rom you feel like flashing. There are already some JellyBean roms out that are fast and usable if you're prepared to read up on them and experiment a bit.
Next thing is the "BaseBand". This is the driver for the "cell phone radio". The part of the hardware that's actually responsible for behaving like a phone
Here's a thread where you can get all of the different base-band versions: - http://forum.xda-developers.com/showthread.php?t=1688049
Personally I know that base-bands 72 and 77 both work perfectly. Since they are the 2 newest versions you can choose which-ever one you want. The newer basebands give much better signal strength on the phone, and the call quality is really good.
Good luck with the experimenting - hope you enjoy.

Are you looking to upgrade her arc to ics? It is much easier to find the resources if that is the case
Sent from my LT18i using xda premium

navras1719 said:
I can't summon the courage to flash it, the process being somewhat different than the flashing of a S2. That's just idiot proof in my opinion, can't go wrong.
Click to expand...
Click to collapse
So is flashing on the Arc/S, so long as you can read.
http://forum.xda-developers.com/showthread.php?t=1304634

Thanks for taking the time to answer such a long and frankly, annoying post Seems I got a bit of homework, manny things to read, so...coffee and patience Hope everything will add up nicely

jman2131 said:
Are you looking to upgrade her arc to ics? It is much easier to find the resources if that is the case
Sent from my LT18i using xda premium
Click to expand...
Click to collapse
Not really, from what I hear ICS dumbs down the phone sort of speak. Now I really can't say, but I would test it out a bit, as long as I learn how to go back to GB.
Another thing that I'm a bit concerned is that all the stuff I find are for LT18i and my gf's phone is a american model LT18a. Will this be a problem ? Or that's just to differentiate the hardware stuff in them ? I hope flashing a LT18i firmware doesn't screw anything up

navras1719 said:
Not really, from what I hear ICS dumbs down the phone sort of speak. Now I really can't say, but I would test it out a bit, as long as I learn how to go back to GB.
Another thing that I'm a bit concerned is that all the stuff I find are for LT18i and my gf's phone is a american model LT18a. Will this be a problem ? Or that's just to differentiate the hardware stuff in them ? I hope flashing a LT18i firmware doesn't screw anything up
Click to expand...
Click to collapse
Yep, the differentiating factor is the hardware. the lt18i and lt18a roms are the same as far as I know. ICS does tend to be more resource heavy especially on the arcs but downgrading back to GB is basically the same method as flashing the ICS, just with another rom.
And also, in response to your first post, you can downgrade to the rootable build of GB, root that, and then flash the build 62 kernel back onto your phone so it's rooted and of the desired build
There's a lot of flashing guides on youtube regarding the arc s. I did a quick search and this one seemed pretty accurate and straight to the point.

Ok I pretty much understood the whole shabang, my last question is about the bootloader, if I unlock it once that's it ? I can flash whatever I want and not need to reunclock it...sort of speak. I read that for warranty reasons it can be relocked but that's not the case for me. Also for flashing a stock rom is it necessary to unlock the bootloader or that's just for rooting ?
Oh and almost forgot...if I understood right...I can downgrade...root...then upgrade to 62 and it will still be rooted ? On my samsung if it'a rooted and I flash abother stock rom...bye bye root, so pretty weird for me. Thank you again, I can't stress enough how helpfull you guys were.
Sent from my GT-I9100 using Tapatalk 2

unlocking the bootloader allows a whole lot more things to be done with the arc, but does make some apps defunct such as track id and music facebook like (which many can do without). flashing and/or rooting a stock rom doesn't need an unlocked bootloader because it's stock and yep, you can downgrade/upgrade, root, and then go back to what build you want by flashing a kernel only

jman2131 said:
unlocking the bootloader allows a whole lot more things to be done with the arc, but does make some apps defunct such as track id and music facebook like (which many can do without).
Click to expand...
Click to collapse
That only applies if you use the official method to unlock, use SETool and you'll retain DRM.
Sent from my CM9'd Ray

XperienceD said:
That only applies if you use the official method to unlock, use SETool and you'll retain DRM.
Sent from my CM9'd Ray
Click to expand...
Click to collapse
Thanks for the clarification. I never knew much about bootloaders and all that

XperienceD said:
That only applies if you use the official method to unlock, use SETool and you'll retain DRM.
Sent from my CM9'd Ray
Click to expand...
Click to collapse
If you could help me out with a SETool link and a basic set of instructions that would be awsome
LE: From what I've seen there are 2 versions of SETool and one's free the other is not. Can the free version be used to unlock the bootloader or do I have to get the full version ? Or even simpler, is there anyway to unlock it (LT18a) free and without losing DRM ?

XperienceD said:
http://forum.xda-developers.com/showthread.php?t=1304634
Click to expand...
Click to collapse

So basically from what I read there, no way for free unlock and retain DRM.

navras1719 said:
So basically from what I read there, no way for free unlock and retain DRM.
Click to expand...
Click to collapse
Follow the instructions up to the point just before patching and tell me what it says please?

if you unlock the bootloader NEVER UPDATE OVER THE AIR this will brick the phone.
The're 2 ways to unlock bootloader
1 via Sony web site but this only works for non branded phones,
2 is to pay if you use a service with setools this will unlock bootloader and make phone SIM free.
Xda member jinx13 offers this service contract him for more info.
Sent from my LT18i using xda premium

zolaisugly said:
2 is to pay if you use a service with setools this will unlock bootloader and make phone SIM free.
Click to expand...
Click to collapse
If SETool can unlock any handset I'm not sure why the S1Tool wouldn't, has anyone confirmed in the thread it doesn't work for the Arc S?

XperienceD said:
If SETool can unlock any handset I'm not sure why the S1Tool wouldn't, has anyone confirmed in the thread it doesn't work for the Arc S?
Click to expand...
Click to collapse
Since my bootloader was opened the setools has been upgraded to setools2 which now covers more phones but not sure which.
Sent from my LT18i using xda premium

XperienceD said:
Follow the instructions up to the point just before patching and tell me what it says please?
Click to expand...
Click to collapse
I'm sorry but what are you refering to ? The process that involves opening the backcover under the battery ?
Some additional info, it's not carrier branded, not sim locked...and using the service code in the dialer says bootloader unlockable : yes
Sent from my GT-I9100 using Tapatalk 2

Should have had this done already.
Sent from my CM9'd Ray