Some people seem to have trouble with looking for info, so here it is, in noob friendly, convenient way.
There are basically four ways to restore our phone to usability, and usage somewhat depends upon how heavily is your system damaged
1. xRecovery
If our phone does not load the system (so we're stuck at SE logo on boot) and we have xRecovery, we can flash the last working backup. This is as clear as it can be, provided that you need to know something already to install xRecovery.
For those who don't know what it is: it's a boothack, which allows to backup and restore all the data stored on phone memory, install custom zips and do other cunning stuff
http://xdaforums.com/showthread.php?t=878426 - here's how to install it, enjoy.
2. Flashtool
Flashtool is a software developed for Xperia X10, with later added functionality for our precious X8.
It comes in handy when two things happen: we cannot, for whatever reason, enter xRecovery and we don't want to/cannot use SEUS or PCC.
How to use?
1. Download latest version from this thread: http://xdaforums.com/showthread.php?t=920746
2. Download ROM image, whichever you prefer:
X8 Shakira E15i_2.1.1.A.0.6_generic.ftf
X8_1.6_clear.ftf
X8_2.0.2_China.ftf
SE x8_2.1_rus.ftf
3. Download the baseband if you want to flash it (custom ROMs like miniCM or CM7 require baseband ending with "15" in order for app2sd to work):
http://xdaforums.com/showthread.php?t=976538
4. Place ftf file in /firmwares directory of your flashtool.
5. Install drivers from /drivers directory (if your antivirus doesn't like them, disable the antivirus )
6. Prepare yourself - plug the USB cable to the computer (NOT TO THE DEVICE YET) and launch flasher.
7. Click "flash", choose your ROM from the list, wait for instructions.
8. When the instruction pops up, press and hold "back" button on your X8 and plug the cable into it. Keep holding untill you see that flashing of files has begun, then you may release it.
9. Flashing will take a while, you may observe the progress on a bottom bar. When it's finished you will be asked to plug off your device and reboot it.
10. Tadam! It's functional again! Clean installation which you may screw up again
11. If you wish to change baseband, clean firmware directory in flashtool and place baseband ftf file in it, then go through flashing procedure again.
3. SEUS/PCC flashing
Most probably the most prototipical way to deal with it. PCC is PC Companion, soft that you obtain on your SD card along with your device, or you can download from SE website: http://www.sonyericsson.com/cws/support/softwaredownloads/detailed/pccompanion/xperiax10?cc=gb&lc=en
Once downloaded and installed, launch it. Most probably it will download some updates. Then choose device updating and follow the instructions. As for flashing - the procedure with holidng back button is the same as with flashtool.
As PCC is heavy and buggy, we are presented with an alternative - SEUS, the Sony Ericsson Update Service. You may download it here: http://www.sonyericsson.com/cws/sup.../detailed/updateservice/xperiax10?cc=gb&lc=en
Once installed and launched, SEUS will start looking for updates. Let it take its time. After a while you will be presented with a board full of phones. Choose your Xperia from the list and continue. You will be asked to flash your phone, analogically as in flashtool in point 2. After flashing is done, SEUS will download the latest SE ROM available for your device and flash it.
ATTENTION
Flashtool, PCC and SEUS will cause loss of data such as contacts, stored messages, installed apps and so on. Anything that exists in phone memory will be erased.
Flashing a backup in xRecovery will cause similar data loss. However, it is possible to flash only system or only data backup in xRecovery. Some ROMs (like miniCM) are updated by update.zip which erases only /system folder, leaving personal data and installed apps intact.
However, you need to be able to enter xRecovery mode in order to use it, SEUS and flashtool do not require enabling the phone. PCC requires the phone to be turned on first in order to recognize it correctly, so it's more update-oriented.
Hope someone will benefit. If you see any mistakes, in spelling, grammar or content, let me know and I will correct it!
i didt understand you good but i thinks you must do this:
flash to stock re-root it and then thats it ....i think
Um... you must bear some things in mind. Firstly, this tutorial was created when there was no way to unlock bootloader whatsoever. If you damaged the bootloader, I cannot help you.
Moreover, GingerDX and some other ROMs base on CWM recovery, which also was not available for X8 when I was creating this tut. If you flash xRecovery for such ROMs, you may screw the booting data of your ROM.
If the ftf files don't work, try to find some other, or some flashable xRecovery stock ROM files - I recall there were some at some point or another.
Anyway - there is a new, up to date tutorial that encompasses the bootloader thingie. Try to find it
Um... you must bear some things in mind. Firstly, this tutorial was created when there was no way to unlock bootloader whatsoever. If you damaged the bootloader, I cannot help you.
Moreover, GingerDX and some other ROMs base on CWM recovery, which also was not available for X8 when I was creating this tut. If you flash xRecovery for such ROMs, you may screw the booting data of your ROM.
If the ftf files don't work, try to find some other, or some flashable xRecovery stock ROM files - I recall there were some at some point or another.
Anyway - there is a new, up to date tutorial that encompasses the bootloader thingie. Try to find it
I tried several times by using X8toolbox-final, found here on the forum but it doesn't work when I click on "root" it always say "waiting for device"...it doesen't matte rif the phone is powered off, powered off and in flash mode or powered on....
I can't activate usb debugging as NO functionality works when the phone is on. The only thing displayed is the screen background and that usb cable is connected...(it asks if I want to transfer files from pc to sd-card).
So, has anybody of any idea or suggestion for me?
Will my phone (if it will ever work again) be again simlocked (even if I unlocked it)?????
2. Flashtool
Flashtool is a software developed for Xperia X10, with later added functionality for our precious X8.
It comes in handy when two things happen: we cannot, for whatever reason, enter xRecovery and we don't want to/cannot use SEUS or PCC.
How to use?
1. Download latest version from this thread: http://xdaforums.com/showthread.php?t=920746
2. Download ROM image, whichever you prefer:
X8 Shakira E15i_2.1.1.A.0.6_generic.ftf
X8_1.6_clear.ftf
X8_2.0.2_China.ftf
SE x8_2.1_rus.ftf
3. Download the baseband if you want to flash it (custom ROMs like miniCM or CM7 require baseband ending with "15" in order for app2sd to work):
http://xdaforums.com/showthread.php?t=976538
4. Place ftf file in /firmwares directory of your flashtool.
5. Install drivers from /drivers directory (if your antivirus doesn't like them, disable the antivirus )
6. Prepare yourself - plug the USB cable to the computer (NOT TO THE DEVICE YET) and launch flasher.
7. Click "flash", choose your ROM from the list, wait for instructions.
8. When the instruction pops up, press and hold "back" button on your X8 and plug the cable into it. Keep holding untill you see that flashing of files has begun, then you may release it.
9. Flashing will take a while, you may observe the progress on a bottom bar. When it's finished you will be asked to plug off your device and reboot it.
10. Tadam! It's functional again! Clean installation which you may screw up again
11. If you wish to change baseband, clean firmware directory in flashtool and place baseband ftf file in it, then go through flashing procedure again.
Hey… I have Xperia x8
I tried to install a ROM…and when it asked to reboot from CWM Recovery…i restarted my X8…but Then after That “Sony Ericsson” Text in showing up on the screen and nothing is happening when i am pressing & holding the Back button also.
I tried with the Flash Tool also…nut Nothing is Happening
With the help of flash tool…it is Detecting my Phone but when i am going to Advanced Menu–Selecting Reboot–There comes 2 options
KERNEL and RECOVERY…i did both the Way..but not Rebooting…
In Logs…it says “Rebooting Your Phone”
BUT Nothing Happening After that “SONY Ericsson Text”
Then for Turning off my Phone...i have to Remove my Battery from the Phone.
I am fade up of this “SONY ERICSSON” Text
PLS PLS PLS PLS PLS Help me…!!!