Develop Bugs

Unable to Root Arc S LT18 which is on 4.0.2.A.0.62 or 4.0.2.B.0.62

Hello XDA.
I am a grt fan of the forum first of all thanks to all who contributed here.
I had a Sony Ericsson W8 E16i, its was a piece of Gem with the nAa CM9 ICS on it thanks to all the guides, Kernels, ROMs and Mods that made my phone smooth and Agile.
Now i have my new Xperia Arc S LT18i which is SIM unlocked and i have just unlocked the boot loader. Now i want to root my phone. I have searched all the threads about rooting, which were mostly of Easyroot Kit, Doom lord's Method of Rooting. I have tried almost all the methods, but i am still unable to root my phone. In one of the threads it was advised to downgrade from 4.0.2.B.0.62 to 4.0.2.A.0.62 via flashing it with flash tool. I did it and tried to root, still no luck. Can any body please help me rooting my device?
Current settings on my phone.
Android 2.3.4
Build No - 4.0.2.A.0.62

There is no such firmware as 4.0.2.B.0.62. It doesn't exist at all.
You have to downgrade from 4.0.2.A.0.62 to 4.0.2.A.0.58 or older(.58 or smaller).
Also, if you have unlocked bootloader, you can just install custom kernel, which already includes autoroot, so if you install that kernel, ROM automatically gets rooted.

FIrst of all, you cannot root .62 in any way or the other........you need to downgrade it to .42 first...this your normal procedure would have been
Searching for following
1)how to downgrade from .62 to .42
2)how to root .42
But you have the greatest advantage of an unlocked boot loader hence, you can directly flash a compatible kernel (e.g doom kernel v19) and then flash a rom.....thus you have a custom kernel that supports overclocking and also a superb rom(e.g acronium 8.2) along with extremely battery efficient system andof course root....

can you screenshot the Firmware?

link-in said:
FIrst of all, you cannot root .62 in any way or the other........you need to downgrade it to .42 first...this your normal procedure would have been
Searching for following
1)how to downgrade from .62 to .42
2)how to root .42
But you have the greatest advantage of an unlocked boot loader hence, you can directly flash a compatible kernel (e.g doom kernel v19) and then flash a rom.....thus you have a custom kernel that supports overclocking and also a superb rom(e.g acronium 8.2) along with extremely battery efficient system andof course root....
Click to expand...
Click to collapse
Installing custom kernel, which has autoroot in it, gives you root access on any ROM version.
Sent from my Xperia Arc S using xda premium

Just flash a kernel with root
Sent from my LT18i using xda app-developers app

here you go guys.. thanks for the reply. I guess i have rooted my phone with fastboot. Can you please tel me how do i change the kernel???
or do the custom rom work with this current kernel.. please help me out.. Also please let me know how do i get CWM on my phone, I know i am asking too many questions.. but i am sure i will get the answers from all of you awesome people at XDA !!! :laugh:

ghost9685 said:
I know i am asking too many questions
Click to expand...
Click to collapse
All of which have been answered many times.

[Q] Unlocked Bootloader and Rooting

Hi, I am new to Android and rooting and had a couple questions. I will be getting the Xperia Play R800x soon. If you get the bootloader unlocked from SE, do you still need to root the device? I have been trying to get everything ready for when I get the phone. I have Android SDK and Flashtool installed. If I want to get the NXT Light Edition Rom, do I need a custom kernel as well? Thanks.

tbrooks9 said:
Hi, I am new to Android and rooting and had a couple questions. I will be getting the Xperia Play R800x soon. If you get the bootloader unlocked from SE, do you still need to root the device? I have been trying to get everything ready for when I get the phone. I have Android SDK and Flashtool installed. If I want to get the NXT Light Edition Rom, do I need a custom kernel as well? Thanks.
Click to expand...
Click to collapse
If you get your bootloader unlocked and flash a custom kernel/ROM no you dont need to root as nearly all, if not all come with root. Seen as you have flashtool and everything else use a custom kernel. If you want to return to stock then just reflash a ftf file for r800x , make sure you dont flash a ftf for r800i though. I dont have the link handy but there is a thread here with all ftf files. Just search in XdA
Sent from my GT-I9300 On Official JB

tbrooks9 said:
Hi, I am new to Android and rooting and had a couple questions. I will be getting the Xperia Play R800x soon. If you get the bootloader unlocked from SE, do you still need to root the device? I have been trying to get everything ready for when I get the phone. I have Android SDK and Flashtool installed. If I want to get the NXT Light Edition Rom, do I need a custom kernel as well? Thanks.
Click to expand...
Click to collapse
Just a heads up.... The NXT light rom is gsm... It won't work on the r800x
Sent from my R800x

Thank you Wedgess and Lordomn. Since the NXT light is for the GSM version, would you recommend the COLA rom, or maybe SlimBean or CM9?

tbrooks9 said:
Thank you Wedgess and Lordomn. Since the NXT light is for the GSM version, would you recommend the COLA rom, or maybe SlimBean or CM9?
Click to expand...
Click to collapse
Think CosmicDans MIUI for ICS is for cdma. Id say its probably one of the best performance wise for ICS. You could also check out my PACMan ROM gor JB i uploaded a cdma version which works fine touchpads are also supported, camera/video ect works. Also instead of saying thanks click the thanks button instead
Sent from my GT-I9300 On Official JB

slim bean performs very well also.

Came back to GB 2.3.7

Yesterday I flashed on my Xperia S GB 6.0.A.3.76 FW. after testing a lot of roms like CM9.1/CM10/KA Xperia/Stock ICS and much more ,I understood that the perfomance with GB FW is the best ever... Everything works like charm ,camera is really great ,especially with "[MOD][CAM]GBXperia S|Video 1080p >20mb Bitrate|720p >15mb Bitrate|>100% Image quality".
Gaming perfomance is so smooth... no lags at all ,GTA VC works and it really great. Also Mobile Bravia Engine is a very huge advantage to me!
Waiting now for the official JB release from Sony ,till then I'm staying with GingerBread FW.
:good:

I thought bravia engine is not working to those who already unlocked bootloader even if you relocked it..yup I agree very smooth when you in gb because I try to reflashed it to recover the drm keys but im failed..music download info is not working also bravia engine..try stock based rom, try xtx7 so smooth also for me it is the best stock based rom and I modify it gx home preferences and tab&grid, all this mod and rom was created by niaboc..see attached
Sent from my LT26i using xda premium

jemju_xps-user said:
I thought bravia engine is not working to those who already unlocked bootloader even if you relocked it..yup I agree very smooth when you in gb because I try to reflashed it to recover the drm keys but im failed..music download info is not working also bravia engine..try stock based rom, try xtx7 so smooth also for me it is the best stock based rom and I modify it gx home preferences and tab&grid, all this mod and rom was created by niaboc..see attached
Sent from my LT26i using xda premium
Click to expand...
Click to collapse
My BL is unlocked and I didn't relocked it. BE works well on GB FW ,but not on ICS. Also tried XTX7 ,but the perfomance was to much sluggish ,games worked on a very low FPS.

One question: If I relock bootloader I can use PCC to update my phone without bricking it right?

brahweiz said:
One question: If I relock bootloader I can use PCC to update my phone without bricking it right?
Click to expand...
Click to collapse
Yes.

Can you give me the link to the fw? Xdafileserver doesn't have that fw anymore

brahweiz said:
Can you give me the link to the fw? Xdafileserver doesn't have that fw anymore
Click to expand...
Click to collapse
http://www.xdafileserver.nl/Files/S... (LT26i)/STOCK ROMS/GB/LT26_6.0.A.3.76_TW.zip

I'm looking for .73 Generic Singapore but thanks anyway

I have unlocked bootloader on custom ics rom and my MBE is not working, does relocking bootloader and switching back to gingerbread will make MBE to work again ?
My MBE was working perfectly on ICS before unlocking my phone's bootloader.
Sent from my Xperia S using xda premium

Xocus said:
I have unlocked bootloader on custom ics rom and my MBE is not working, does relocking bootloader and switching back to gingerbread will make MBE to work again ?
My MBE was working perfectly on ICS before unlocking my phone's bootloader.
Sent from my Xperia S using xda premium
Click to expand...
Click to collapse
It should work. I also had Locked BL with ICS .452 FW and MBE worked great... After unlocking BL ,MBE never worked for me on ICS ,even on .452 FW. Now I'm on GB and unlocked BL.

Never actually tried GB on my S, as soon as I bought it I updated to ICS. I'll give GB a shot and see how it is

Hi, do I install this using recovery? or do I need to use Flash Tool? The one that was posted for the stock GB firmware. Thanks!
http://www.xdafileserver.nl/Files/So....A.3.76_TW.zip

:silly:
jfdsmabalot said:
Hi, do I install this using recovery? or do I need to use Flash Tool? The one that was posted for the stock GB firmware. Thanks!
http://www.xdafileserver.nl/Files/So....A.3.76_TW.zip
Click to expand...
Click to collapse
You use flashtool

davidbar93 said:
http://www.xdafileserver.nl/Files/S... (LT26i)/STOCK ROMS/GB/LT26_6.0.A.3.76_TW.zip
Click to expand...
Click to collapse
Ok, so I need to download the zip file then extract the ftf file and put it inside the flashtool firmware folders then flash through flash tool. After that I can also use fast boot to flash Doom Kernel for root. Ok, Got it. Thanks!

davidbar93 said:
It should work. I also had Locked BL with ICS .452 FW and MBE worked great... After unlocking BL ,MBE never worked for me on ICS ,even on .452 FW. Now I'm on GB and unlocked BL.
Click to expand...
Click to collapse
I successfully downgraded my xperia s and MBE is also working,my bootloader is also unlocked.
What if I relock my bootloader and flashed ICS 6.1.a.2.45, will MBE work?

Xocus said:
I successfully downgraded my xperia s and MBE is also working,my bootloader is also unlocked.
What if I relock my bootloader and flashed ICS 6.1.a.2.45, will MBE work?
Click to expand...
Click to collapse
No

I flashed Doomkernel v4, but install zip from SD card wasn't working. Weird. As soon as I selected the option something got broken, I could not select any zip.

neizel said:
No
Click to expand...
Click to collapse
or update it OTA?

is there root for 2.3.7? I was thinking of switching back to Gb too before but not sure if it can be rooted thats why im with ICS for now.

tried rooting gingerbread but kept bootlooping, one more try and it looks like it might have to be going back to ICS.

[Q] Help with camera

hi i have a xperia play r800x and i see that the trueancestor rom is compatible with my phone and everything works good except the video recording, every time i stop recording it forces closing how i can fix that?
sorry for my english xD

Fiti_99 said:
hi i have a xperia play r800x and i see that the trueancestor rom is compatible with my phone and everything works good except the video recording, every time i stop recording it forces closing how i can fix that?
sorry for my english xD
Click to expand...
Click to collapse
what kernel are you using? if you are using stock lupus gb/ics 720 p version you might be using a 420 p setting of recording. it is a known issue

hi i have the stock kernel because my bootloader is not unlocked
sorry for my english xD

Fiti_99 said:
hi i have the stock kernel because my bootloader is not unlocked
sorry for my english xD
Click to expand...
Click to collapse
Well since you have a r800x I suggest you unlock your boot loader and flash a new kernel
sent from my Sony Ericsson Xperia Play™(r800x) Running Slimbean 3.0 using Tapatalk 2™

ok what is the best kernel for r800x and is there any good ics rom?

Fiti_99 said:
ok what is the best kernel for r800x and is there any good ics rom?
Click to expand...
Click to collapse
on my personal opinion True Ancestor Rom by Jjkkyu its my daily driver and everything is working fine and battery life is good and i use it together with Lupus ICS_v12

ok that rom you mentioned is compatible with r800x??? how i unlock my bootloader?? and if i unlock my bootloader and i downgrade with flashtool my bootloader is still unlocked??

Fiti_99 said:
ok that rom you mentioned is compatible with r800x??? how i unlock my bootloader?? and if i unlock my bootloader and i downgrade with flashtool my bootloader is still unlocked??
Click to expand...
Click to collapse
heres the link for the rom http://forum.xda-developers.com/showthread.php?t=2210559&page=2
you can also find in the android dev section how to unlock your bootloader

ok but is compatible with r800x, games camera etc and how do i downgrade without relocking my bootloader
edit: i also saw the xdark rom and looks good what rom is the best that it will give full xperia 2011 ics experience with completely funcionality
edit2: ok i have Bootloader unlock allowed missing so how i can unlock my bootloader
sorry for my english

That's not compatible with r800x. Its only for gsm. It'll boot but it wont give you service and if you want camera and game pads you cant install on locked bootloader. Also download an ftf and flash with flashtool to downgrade without unlocking. Check out fma965s guides. They are very helpful and explain how to do everything very well
Sent from my r800x using xda developers app

ok i know, i dont care about service, i only want a ics rom with funcionaly at 100%
with camera and touchpads and how i UNLOCK MY BOOTLOADER WITH Bootloader unlock allowed missing
and i ask of how to downgrade without RELOCKING bootloader, no UNLOCKING
edit: ok i dont care if it is an ics or, jb or gb rom I ONLY WANT A FIX FOR CAMERA ON DIXPERIA 2 OR XPERIA NXT ROM OR TA GB ROM WITH A LOCKED BOOTLOADER
edit2k i have unlocked my bootloader so can someone please give a tutorial of how to install the xdark ics rom, i have r800x with 2.3.3

Do not install ANY GSM GB roms they are incompatable to the R800x you will get a black screen instead of a home screen. You can only install ics and jb roms. but that requires a unlocked bootloader. If you dont have your bootloader unlocked your stuck with what you have.

chery2k said:
Do not install ANY GSM GB roms they are incompatable to the R800x you will get a black screen instead of a home screen. You can only install ics and jb roms. but that requires a unlocked bootloader. If you dont have your bootloader unlocked your stuck with what you have.
Click to expand...
Click to collapse
Actually you can install gsm gb roms and flash xdarkmarios patch right afterwards and it'll boot fine but no service ofcourse
Sent from my R800x using xda app-developers app

yes i flashed several gsm roms with darkmario pathc and all works excpt the video recording in high or youtube high (it works in the other modes)

ok i cant find any fix to video recording or any good roms (due to that all the roms for r800x are themed stock roms and my bootloader is locked) so i will stay in stock rom with my own adds
sorry for my english

[Q] how to root xperia u jb? with worked methd!!!!

:crying: :crying: :crying:
i want to root my xperia u but all methods dosn' t work (for example: unlock root program. root by bin4ry....eroot;kingo programs....and more)
please help me to root my device by pre-rooted kernel for example because i don't found it for my android jelly bean

I have rooted my phone(Xperia acro S),after 20 days later it shows your phone is not rooted.
i checked My phone with Root Checker Basic.

taki fouhal said:
:crying: :crying: :crying:
i want to root my xperia u but all methods dosn' t work (for example: unlock root program. root by bin4ry....eroot;kingo programs....and more)
please help me to root my device by pre-rooted kernel for example because i don't found it for my android jelly bean
Click to expand...
Click to collapse
Thats strange..
You are in a Ported JB rom in ur Xperia U.. without a custom kernel you cant flash JB in XU... So probably u should installed a custom kernel... Right ? So u should hav root too....
Try Experimental kernel v 11.c for xperia U JB from Android Development thread of XU

taki fouhal said:
:crying: :crying: :crying:
i want to root my xperia u but all methods dosn' t work (for example: unlock root program. root by bin4ry....eroot;kingo programs....and more)
please help me to root my device by pre-rooted kernel for example because i don't found it for my android jelly bean
Click to expand...
Click to collapse
Rajeev said:
Thats strange..
You are in a Ported JB rom in ur Xperia U.. without a custom kernel you cant flash JB in XU... So probably u should installed a custom kernel... Right ? So u should hav root too....
Try Experimental kernel v 11.c for xperia U JB from Android Development thread of XU
Click to expand...
Click to collapse
umm...not really..flashing a kernel has nothing to do with root...you need an unlocked bootloader...not root...i am sure there are root methods available for lower versions of your device...one thing u can do....flash an old kernel for which root method is available(eg : ICS or GB) then after root flash back the JB kernel(stock or custom),upto you/..

Dark Wraith said:
umm...not really..flashing a kernel has nothing to do with root...you need an unlocked bootloader...not root...i am sure there are root methods available for lower versions of your device...one thing u can do....flash an old kernel for which root method is available(eg : ICS or GB) then after root flash back the JB kernel(stock or custom),upto you/..
Click to expand...
Click to collapse
Ha ? Custom kernels have auto root and cwm /twrp included my friend.. And the one he telling that experimental kernel for XU JB is already have Autoroot and Cwm recovery...
Did u read his question clearly? According to his comment he is already on JB on XU.. There is no way to install JB on a locked bootloader in XU.. So probably he is in a Unlocked Bootloader and sure with a custom kernel too.. Thats y i told him to flash Experimental kernel v11.c.. Got it?

Rajeev said:
Ha ? Custom kernels have auto root and cwm /twrp included my friend.. And the one he telling that experimental kernel for XU JB is already have Autoroot and Cwm recovery...
Did u read his question clearly? According to his comment he is already on JB on XU.. There is no way to install JB on a locked bootloader in XU.. So probably he is in a Unlocked Bootloader and sure with a custom kernel too.. Thats y i told him to flash Experimental kernel v11.c.. Got it?
Click to expand...
Click to collapse
Custom kernels dont have auto-root and CWM/TWRP always(it all depends on the dev who is packing it). and there is nothing called a pre-rooted kernel. You dont root your kernel buddy,you root your ROM. Pre-rooted kernels(usually bundled alone) have a script packed with its ramdisk that roots the ROM you are running. Same goes for recovery. I can show you plenty of kernels which has all the features of Overclocking,I/O schedulers,governors etc without CWM but you need a rooted ROM . So a developer who is providing an entire ROM usually pre-roots the ROM and provides a custom kernel(usually no pre-root feature but in insecure mode). while someone who provides only a kernel to work with other roms provides a pre-rooted kernel. And even i said the same thing. I said you dont need root to flash a kernel. You need an unlocked bootloader(that also depends, There are ROMS and kernels which don't need unlocked B/L)
Yes what you mean is correct. The ROM he has installed should have root access( I mistook it for official JB firmware)

@Dark Wraith better we can leave this discussion here.. Because we both are arguing.. But where is the OP ? So its just a time waste for both of us...
And i know custom kernels should need an unlocked bootloader....