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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
I unlocked bootloader and rooted my htc one v(gsm).I am currently on stock htc sense I want to install twrp so can i install it from goo manager i downloaded from play store??
Also I want cm10 rom so if I flashed it from twrp do i need to install kernel by going into fastboot mode and using cmd etc.??i saw a video tutorial in which they just installed rom from twrp and they didnt installed kernel but i have heard many users are not going past logo as they havent installed kernel...
mandarmane said:
I unlocked bootloader and rooted my htc one v(gsm).I am currently on stock htc sense I want to install twrp so can i install it from goo manager i downloaded from play store??
Also I want cm10 rom so if I flashed it from twrp do i need to install kernel by going into fastboot mode and using cmd etc.??i saw a video tutorial in which they just installed rom from twrp and they didnt installed kernel but i have heard many users are not going past logo as they havent installed kernel...
Click to expand...
Click to collapse
You will want to install your recovery using a cmd prompt. Our phone is S-on, so you may run into difficulty trying to use goo for a recovery installation. MAKE A BACKUP ONCE YOU GET TWRP INSTALLED!!!!
If you want cm10 you will need to get your twrp up and running first, download your desired cm10 zip to your computer, open archives using 7zip, copy the boot img from the rom zip to your working fastboot folder (assuming that you have fastboot set up since you got this far), open a cmd window and navigate to your fastboot folder using the command cd c:\yourfastbootfoldername.
Once your rom is installed, reboot to bootloader. Plug your phone into your pc, it should switch from fastboot to fastboot usb. Use the command fastboot flash boot boot.img. You should now be able to reboot your phone and enjoy cm10!
sellersj27 said:
You will want to install your recovery using a cmd prompt. Our phone is S-on, so you may run into difficulty trying to use goo for a recovery installation. MAKE A BACKUP ONCE YOU GET TWRP INSTALLED!!!!
If you want cm10 you will need to get your twrp up and running first, download your desired cm10 zip to your computer, open archives using 7zip, copy the boot img from the rom zip to your working fastboot folder (assuming that you have fastboot set up since you got this far), open a cmd window and navigate to your fastboot folder using the command cd c:\yourfastbootfoldername.
Once your rom is installed, reboot to bootloader. Plug your phone into your pc, it should switch from fastboot to fastboot usb. Use the command fastboot flash boot boot.img. You should now be able to reboot your phone and enjoy cm10!
Click to expand...
Click to collapse
So I shouldn't install kernel (Hellboy )??? I unlocked my bootloader so my device should be s - off or does that mean something different plz guide me
mandarmane said:
So I shouldn't install kernel (Hellboy )??? I unlocked my bootloader so my device should be s - off or does that mean something different plz guide me
Click to expand...
Click to collapse
You should install kernel that given on every ROM thread, and not always HELLBOY.
Unlocked bootloader doesn't mean that your phone is S-Offed, it is different.
mandarmane said:
So I shouldn't install kernel (Hellboy )??? I unlocked my bootloader so my device should be s - off or does that mean something different plz guide me
Click to expand...
Click to collapse
There is a whole lot more work to get the device s-off. Your kernel is the boot img that I mentioned earlier. I am PrimoC, so I don't have experience with hellboy, but I do have to flash a new kernel with every rom. If you are going from one cm10 to another cm10, you might be safe, but I wouldn't chance it. Unlocking your bootloader allows you to flash kernels. It doesn't give you s-off.
sellersj27 said:
There is a whole lot more work to get the device s-off. Your kernel is the boot img that I mentioned earlier. I am PrimoC, so I don't have experience with hellboy, but I do have to flash a new kernel with every rom. If you are going from one cm10 to another cm10, you might be safe, but I wouldn't chance it. Unlocking your bootloader allows you to flash kernels. It doesn't give you s-off.
Click to expand...
Click to collapse
can you provide any tutorial for installing twrp on htc one v gsm version and downloading link plz that will help me alot
Ringford said:
You should install kernel that given on every ROM thread, and not always HELLBOY.
Unlocked bootloader doesn't mean that your phone is S-Offed, it is different.
Click to expand...
Click to collapse
While flashing cm10 which boot.img file should i use the one that came with rom or hellboy
mandarmane said:
While flashing cm10 which boot.img file should i use the one that came with rom or hellboy
Click to expand...
Click to collapse
The one that came with ROM. And please.. just read the damn instruction in the ROM thread, everything is said clearly there, I can bet on that. Read it carefully step by step or you will end up here soon or sooner with another question like "Guys my htc is bricked help".
I just got home from work.... Did you get it, or would you like that tutorial
Sent from my One V using xda app-developers app
sellersj27 said:
I just got home from work.... Did you get it, or would you like that tutorial
Sent from my One V using xda app-developers app
Click to expand...
Click to collapse
Plz provide me tutorial and can you confirm from any gsm user which kernel should I use for cm10, from cm10 thread I think its Hellboy but not sure and I can't post in development section yet.. thanks
Hello, I'm Xperia s user, but my girlfriend has M Dual.
I know a problem, that we cant flash recovery on stok kernel. But we can do nandroin backup throo ADB, and flash custom stock based roms throo fastboot/ only we need to do Zip. with incleded scripts for wiping data\cache\dalvik\system(if need)
will anybody try\or help me? I'm askingonly poeple who willn't scary of softbrick
thanks
grigorian941 said:
I know a problem, that we cant flash recovery on stock kernel
Click to expand...
Click to collapse
Huh? This is not a problem.
You can flash stock kernel with integrated recovery and then normally ROM.
Yes, you need unlocked bootloader. But anyway it's required to use customs.
As to your idea.
Yes, it's possible use fastboot to write dumps of /system from customs.
But this have sense only as alternate install solution.
Hey guys,
I have Canvas A1 device which I had upgraded to Marshmallow but later on i flashed CM 12 LP. Then I tried to get back on Official Stock LP by using flash files from SP Tool it was successful but my phone is not booting up!
I flashed it on Download Mode! Now what should i do help me?
can u boot in bootloder?
if yes, flash a custom recovery and apply this nandroid to go to stock rom, replace your custom recovery with stock and lock your bootloder to return to officiall mode of your phone.
http://forum.xda-developers.com/canvas-a1/help/dg-downgrade-to-stock-kitkat-4-4-4-t3070721
madhurajkumar said:
can u boot in bootloder?
if yes, flash a custom recovery and apply this nandroid to go to stock rom, replace your custom recovery with stock and lock your bootloder to return to officiall mode of your phone.
http://forum.xda-developers.com/canvas-a1/help/dg-downgrade-to-stock-kitkat-4-4-4-t3070721
Click to expand...
Click to collapse
not able go into recovery plz help. but gets detected only for flashing
nilesh15 said:
not able go into recovery plz help. but gets detected only for flashing
Click to expand...
Click to collapse
If you have a working fastboot in your pc then follow these steps:
1. copy compatible recovery.img into the fastboot folder.
2.go to bootloader and type this command: fastboot boot recovery.img .
mee too facing this same situation... :\ please help me
update sp flash tool and try again. it solved mine i hope it helps.
Hello guys how u doing...
My question is what is the difference between Fastboot And Recovery ROM in terms of what files they have.
I know Recovery ROM can be flashed by recovey and fastboot is used when phone's recovery in not accessible.
If i am on android 9 (MIUI 11.0.3.0) and i want to downgrade to oreo (9.5.19) can i flash this 9.5.19 recovery ROM directly via custom recovery or Use mi flash tool.Please tell me the reason why u choose either method
Sidgup1998 said:
Hello guys how u doing...
My question is what is the difference between Fastboot And Recovery ROM in terms of what files they have.
I know Recovery ROM can be flashed by recovey and fastboot is used when phone's recovery in not accessible.
If i am on android 9 (MIUI 11.0.3.0) and i want to downgrade to oreo (9.5.19) can i flash this 9.5.19 recovery ROM directly via custom recovery or Use mi flash tool.Please tell me the reason why u choose either method
Click to expand...
Click to collapse
For upgrade/reflash/downgrade MIUI always use fastboot ROM and chose clean install. Custom recovery is better for rooted devices OTA MIUI update and for custom ROM's. And if you gonna play with ROM's be smart and unlock bootloader for easy fix if something goes wrong aka (un)bricking device.
Good luck
Sent from my unknown using XDA Labs
I'd be interested in this question too. Is there any difference in what those versions contain?
Fastboot ROMs are much bigger usually, like double the size. Is this only due to the recovery versions beeing compressed (better), or do the fastboot versions contain additional data?