Need to revert back to Stock ROM - Xperia Arc Q&A, Help & Troubleshooting

How can I revert back to the stock ROM on my Arc S?
Thanks

Use SEUS or flashtool and use search function .

Here is the prerooted .img 4.0.2.A.0.62 Generic Global ready to flash with fastboot (unocked bootloaders):
Code: fastboot flash system SYSTEMFILE.img
Where SYSTEMFILE is the name of the file you download.
My original device settings said lt18i but this one says lt15.
Is it still safe to flash it?

Related

Requied Rooted LT15i_3.0.1.A.0.145 Generic Global firmware

hi i need
Rooted LT15i_3.0.1.A.0.145 Generic Global firmware
in ftf format only so i can flash it with flash tool
any one tell me from where i can get it
Rooted LT15i_3.0.1.A.0.145_GenericGlobal_system.zip (146.71 MB)
http://www.multiupload.com/MC3QLZRI4N
That's not .ftf but .img (LT15i_3.0.1.A.0.145_GenericGlobal_system.img)
you can create a ftf bundle with flashtool using the image
or you can try this one : http://www.megaupload.com/?d=9JUKBC1J
edit :sorry this one is not rooted just create bundle with flashtool :
- Advanced
- Bundle Creation
good luck
or try this :
jerpelea said:
YOU CAN REVERT TO SE STOCK ROM AT ANYTIME EVEN IF YOUR PHONE IS NOT STARTING WITH THIS PACKAGE
YOU WILL LOOSE ALL USERDATA
http://hotfile.com/dl/120294151/9148152/LT15i_3.0.1.A.0.145_GenericGlobal_rooted.7z.html
Click to expand...
Click to collapse
But I think it wont help, your bootloader is locked right ?
if not just open the ''restoreme.cmd'' and thats all
Yes you are right
yes my bootloader is locked because i have an orange branded phone, thats why asking for rooted TFT file so can be able to use it with flash tool
please help us
any one please give us
LT15i 3.0.1.A.0.145 Generic Global firmware ***Rooted*** in ** TfT **
so we flash it through flash tool

[Q] How to Backup stock Kernel + ROM ?

Hello Guys !
I wanna try some custom ROM so before doing that want to backup my Kernel & ROM. If anything gone wrong so I can revert back to original ROM.
My Cell details:
Xperia Arc S
LT18i
Android Version 2.3.4
Baseband Version -64
Build number
4.0.2.a.0.62
Locked bootloader
& unrooted.
Please someone guide me....
Thanks in advance...
If your bootloader's locked then you can't back up. You can only reload(repair)it from PC companion.
sinkster©
Thanks sinkster !
Ok done unlocked bootloader.
Then advice the further steps...
XPERIA CWM AUTO INSTALLER
download this app and install CWM recovery on ur phone...
Then reboot ur phone into recovery mode...
TO DO THIS, LONG PRESS BACK BUTTON WHILE THE PHONE RE-BOOTS
(OR)
KEEP TAPPING VOLUME DOWN BUTTON...
After it boots into recovery, go to BACKUP & RESTORE and Select Backup...
This will create a NANDROID BACKUP on your phone exactly as it is...including apps n contacts n all other data..
you can find it in SDCARD/Clockworkmod/Backup/
Good day...
If you wanted to take a backup without installing CWM you can use fastboot to boot (not flash) a kernel that has CWM built in.
thanks amulbaby
I will try and get back here with comment ...
EDIT:
I tried that steps but it will works only on rooted phone ..., can not enter in to recovery mode by pressing any key, it normally boots up and appear home ...
smartarse93 said:
If you wanted to take a backup without installing CWM you can use fastboot to boot (not flash) a kernel that has CWM built in.
Click to expand...
Click to collapse
How to do so... any guide links pls .. .
ShresthasR said:
thanks amulbaby
I will try and get back here with comment ...
EDIT:
I tried that steps but it will works only on rooted phone ..., can not enter in to recovery mode by pressing any key, it normally boots up and appear home ...
Click to expand...
Click to collapse
Why don't you root it with flashtool then?
But for that u wud have to downgrade to .42, with flashtool before rooting
Hey I am also wondering about this. I have lt15i flashed with Official .562, locked bootloader and CWM installed via flashtool.
Which ICS roms will work with official .562 and locked bootloader? I have been searching all morning but not a lot of updates regarding this since the official .562 release.
djsneak1 said:
Hey I am also wondering about this. I have lt15i flashed with Official .562, locked bootloader and CWM installed via flashtool.
Which ICS roms will work with official .562 and locked bootloader? I have been searching all morning but not a lot of updates regarding this since the official .562 release.
Click to expand...
Click to collapse
PROBABLY THIS ..... NOT SURE ....
T.E.A.M. Stock Rom for 2011 Xperia devices
amulbaby said:
Why don't you root it with flashtool then?
But for that u wud have to downgrade to .42, with flashtool before rooting
Click to expand...
Click to collapse
Here is the point I was looking for these alternative . . .
I have STOCK ROM with 4.0.2.a.0.62, actually I want to backup these stuff, I read about that downgrading via flashtool and root, if I flashed via flashtool that STOCK ROM will wipe...
Anyway here what I did to make a copy of my stock firmware & upgraded to ICS firmware & rooted.
Repaired my phone using Sony update service to download and backup STOCK firmware
Flashed with flashtool official firmware LT18i 4.1.A.0.562 NCB Icecream Sandwich Official
First you need to download a kernel that has cwm built in, I would search for recoveryARC.IMG then you also need fastboot from the SDK.
All you would do is connect your phone I'm fastboot then run in a command prompt fastboot boot recoveryARC.IMG. Your phone would then boot using that kernel and you can enter cwm by pressing the vol down several times. This process wouldn't flash your kernel only load it temporarily.
I would try and find a guide about them but I'm on my phone.
Sorry just noticed you've already done it, congrats enjoy ics.
Sent from my LT18i using XDA
smartarse93 said:
First you need to download a kernel that has cwm built in, I would search for recoveryARC.IMG then you also need fastboot from the SDK.
All you would do is connect your phone I'm fastboot then run in a command prompt fastboot boot recoveryARC.IMG. Your phone would then boot using that kernel and you can enter cwm by pressing the vol down several times. This process wouldn't flash your kernel only load it temporarily.
I would try and find a guide about them but I'm on my phone.
Sorry just noticed you've already done it, congrats enjoy ics.
Sent from my LT18i using XDA
Click to expand...
Click to collapse
Thanks bro ...
I already upgraded, anyway I want to know the process, you mentioned here this process wouldn't flash kernel only load it temporarily, I am confused...
Could you describe in details .. ? Actual what happens if we flash recovery img...
Well you can use fastboot to install the kernel which overwrites the previous one, or you can use it boot the kernel which just sends the kernel to the phone which the boots and temporarily uses the kernel. However when the phone next shuts down it will return to normal use.
If you flash a kernel it writes the .IMG to the boot partition. So if I wanted to use a kernel that stayed between reboots I would use 'fastboot flash boot kernelname.IMG'
However if I was running stock I could use recoveryARC.IMG with cwm, and do fastboot boot recoveryARC.IMG then run update.zip as normal. Then all you have to do is reboot, you'll be back to stock but the update would still be installed.
Sorry if it's not cleat, the best I could do on my phone.
Sent from my LT18i using XDA
Please elaborate on backing up STOCK ROM
ShresthasR said:
Here is the point I was looking for these alternative . . .
I have STOCK ROM with 4.0.2.a.0.62, actually I want to backup these stuff, I read about that downgrading via flashtool and root, if I flashed via flashtool that STOCK ROM will wipe...
Anyway here what I did to make a copy of my stock firmware & upgraded to ICS firmware & rooted.
Repaired my phone using Sony update service to download and backup STOCK firmware
Flashed with flashtool official firmware LT18i 4.1.A.0.562 NCB Icecream Sandwich Official
Click to expand...
Click to collapse
Can you please give me details on you did this? It is precisely what I want to do (ie. Backup the stock carrier rom on my Xperia Arc before flashinging an old ROM in order to root it).
Did you use the "repair" option from "Sony PC Companion 2.1>Support Zone>Phone software update>repair phone"?
Or did you use the software from here: http: // w ww(dot)sonymobile(dot)com/gb/tools/update-service/
Can you please tell me the whole procedure on how you did the backup of the STOCK ROM? Thanks!
King of Procrastinators said:
Can you please give me details on you did this? It is precisely what I want to do (ie. Backup the stock carrier rom on my Xperia Arc before flashinging an old ROM in order to root it).
Did you use the "repair" option from "Sony PC Companion 2.1>Support Zone>Phone software update>repair phone"?
Or did you use the software from here: http: // w ww(dot)sonymobile(dot)com/gb/tools/update-service/
Can you please tell me the whole procedure on how you did the backup of the STOCK ROM? Thanks!
Click to expand...
Click to collapse
Actually what I did just followed this guide
http://forum.xda-developers.com/showthread.php?t=1304634
At this thread just follow the video tutorial under section
"How to backup your carrier firmware using Update Service"
Youtube link: http://youtu.be/bB77gWRUI_A
Thanks XperienceD for nice guide
just want to ask, does CWM backup also backups the kernel or firmware?
and how do i restore stock kernel with or without using ODIN?
how do i go on flashing custom firmware? i really do need explanation especially for the .img file that i have been seeing guys.
please help me out because i really want to learn more about software and stuff.
thank you very much and god bless you guys.
ROM backup OK; How to take backup of Kernel
I am using Sony Xperia Ray ST18i
used it for a year with stock kernel and ROM
rooted it long ago, but was afraid of custom ROMs
last month I unlocked bootloader, flashed ROM and custom ROM (beanstalk 4.3.075), enjoying it but obviously not so stable like stock
Now if I wish to move back to my stock kernel and ROM
what steps are required.
I suppose
1. flash the stock kernel
2. restore from backed up ROM (I do have nandroid backup of stock ROM)
but how to achieve the step 1, as I learnt nandroid backup doesn't backs up ROM.
My collegue is having same phone still on stock, Can I use his phone somehow to extract kernel. I searched and found a zip to be used through CWM which backs up kernel it was meant for some samsung phone I tried but failed.
Thanks in advance.
Do I need to supply some more information to get help?
Backup stock ROM
I used this backup guide, but dont know if it will work for you http://helpadude.com/how-to-backup-your-android-rom/
If it does plz give thanks

[Q] Bootloop on LT15i

My LT15i got upgraded to .62 version via OTA and I wanted to downgrade it to .42 to root it safely and easily. Something didn't work out and after flashing the downgrade my phone got bootlooped. I downloaded different official ROMs to go back to, but I can't flash them
LT18i_4.0.2.A.0.42_(1254-2716).ftf
-
25/026/2012 19:26:29 - INFO - Flashing system.sin
25/026/2012 19:26:47 - ERROR - Error flashing. Aborted
LT15i_4.1.B.0.431_Generic.Global.World.ftf
-
25/026/2012 19:26:29 - INFO - Flashing vendor.sin
25/026/2012 19:26:47 - ERROR - Error flashing. Aborted
Any ideas what can I do? I didn't use fastboot since I'm not sure what should I do with it, just flashtool.
Just keep flashing it or use Update Service to repair it.
There are dozens of generic ROMs.
e.g. http://forum.xda-developers.com/showthread.php?t=1491066
Use Flashtool repeatedly.. doesn't always work the first time around..
Does the LED indicator change after a while of being plugged in in flash mode? Check this, as I kept having the same issue. I just kept yanking the cable out and plugging it back in and repeating the procedure over and over until it fianlly flashed the kernel for me.
Was using arcknight kernel when i got stuck in bootloop, flashed to stock kernel and repaired over SEUS before unlocking BL and rooting once again using zergrush
Follow these steps.
pre requisites - Rooted/Bootloader unlocked.
1. Download the Flash tool.
2. Download the generic global rom - LT15i 4.0.2.A.0.42 (.ftf) [Search in the forum]
3. Flash the ftf using flash tool. (google how to flash using flash tool. There are numerous threads)
4. Once you successfully installed .42 firmware. [Using flashtool root the mobile using zergrush method. if u want]
5. Install busybox using flash tool.
6. Install x-parts from play store to install the CWM.
That's it.
Let me know if u have any problems.
Hit "Thanks" if anyone helped you.:good:
Xperia Arc LT15i
Rooted/Bootloader Unlocked
Running Jelly Bean - FXP138/CM10
KartzXDA said:
Follow these steps.
pre requisites - Rooted/Bootloader unlocked.
1. Download the Flash tool.
2. Download the generic global rom - LT15i 4.0.2.A.0.42 (.ftf) [Search in the forum]
3. Flash the ftf using flash tool. (google how to flash using flash tool. There are numerous threads)
4. Once you successfully installed .42 firmware. [Using flashtool root the mobile using zergrush method. if u want]
5. Install busybox using flash tool.
6. Install x-parts from play store to install the CWM.
Click to expand...
Click to collapse
The problem is, I used to have root and CWM installed, but now I can't enter it, because when I flash the ROM, it gets stuck in certain moment. I'm stuck somewhere between 3 and 4 point, where my flashtool doesn't correctly flash the ROM onto my Lt15i. From this bootloop I can't reach CWM or normal system to enter the google play or something.
I'll keep on trying flashing it, I'll also try to flash it from another computer
Is it possible that flashtool is being blocked by certain application like, I don't know, PC companion?
Additionally, I can't go back to the stock ROM via PC companion or SEUS, because when I'm in flashmode and phone is ready to flash, the PC companion says that my phone is already upgraded and there are no new updates to it, so it can't be upgraded, even tho there is some old flashed ROM inside ( I think PC companion reads the old ROM, that I used to have before bootloop, I believe it was the 4.0~~~~.62 version)
Masterossi said:
The problem is, I used to have root and CWM installed, but now I can't enter it, because when I flash the ROM, it gets stuck in certain moment. I'm stuck somewhere between 3 and 4 point, where my flashtool doesn't correctly flash the ROM onto my Lt15i. From this bootloop I can't reach CWM or normal system to enter the google play or something.
I'll keep on trying flashing it, I'll also try to flash it from another computer
Is it possible that flashtool is being blocked by certain application like, I don't know, PC companion?
Additionally, I can't go back to the stock ROM via PC companion or SEUS, because when I'm in flashmode and phone is ready to flash, the PC companion says that my phone is already upgraded and there are no new updates to it, so it can't be upgraded, even tho there is some old flashed ROM inside ( I think PC companion reads the old ROM, that I used to have before bootloop, I believe it was the 4.0~~~~.62 version)
Click to expand...
Click to collapse
Disable antivirus and run the flash tool with adminstrator. Try to refalsh the .42 firmware.
Try to flash the .42 ftf with old version of flash tool. I saw some cases where with new flash tool, .42 is not flashed successfully.
Hit "Thanks" if anyone helped you.:good:
Xperia Arc LT15i
Rooted/Bootloader Unlocked
Running Jelly Bean - FXP138/CM10

6.1.A.2.55 Root & Flash Access

I have the LT26i boot loader unlocked Xperia S and it was updated to 6.1.A.2.55. Its still Android 4.0.4 and not much has changed. I am trying to root it and it get all the way to where I hit the restore button but then nothing happens. I figured I can flash it back to the 6.1.A.0.452 but I ran into a snag there too. The old ics driver is not working. I am running flash tool 0.9.10.1
Is there any work around for this? Your help is much appreciated
PS
I got the new update directly from Sony.
007Luffy said:
I have the LT26i boot loader unlocked Xperia S and it was updated to 6.1.A.2.55. Its still Android 4.0.4 and not much has changed. I am trying to root it and it get all the way to where I hit the restore button but then nothing happens. I figured I can flash it back to the 6.1.A.0.452 but I ran into a snag there too. The old ics driver is not working. I am running flash tool 0.9.10.1
Is there any work around for this? Your help is much appreciated
PS
I got the new update directly from Sony.
Click to expand...
Click to collapse
Hi it seems untilnow there is no option for root for 6.1.A.2.55, you have to go back to some other version .45 or .50 and root that one and flash a .55 sytem to get the latest updates.
The strange thing is, i did the same and i was getting still the notification to update to .55 and i uninstalled the update service aplication.
Good luck i hope this helps.
hey try this since your bootloader is unlocked,
1.flash advanced stock kernel or ka sspeed then boot.
2. after that reboot, then flash via fastboot kernel.sin from stock ftf of .55 firmware.
"fastboot flash boot kernel.sin" without the quote ,
mharckk said:
hey try this since your bootloader is unlocked,
1.flash advanced stock kernel or ka sspeed then boot.
2. after that reboot, then flash via fastboot kernel.sin from stock ftf of .55 firmware.
"fastboot flash boot kernel.sin" without the quote ,
Click to expand...
Click to collapse
The problem is I get a Driver error when I try to flash anything even though I installed the drivers so I am unable to flash anything in flash and fastboot mode so I cant go back.
Thanks for the help.. But the current version of flash tool cant seem to make changes it only recognize the device
download pda.net, this will install your driver.

[Q] Back Button Broken

Hi, i would like to reflash my xperia arc but my back button does not work ,is there another way to get in flashmode?
You have no choice but to flash a stock kernel via fastboot then install stock ROM as a update.zip
僕のLT18iから送られてきた
Or unpack the whole FTF file and install every .sin file via fastboot, I believe it should work that way, though haven't tested myself.

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