Solve your Problem yourself: installing Froyo(2.2) in sony ericsson Xperia X8

For the installation of Froyo on Xperia X8, you need to download Froyo’s Custom ROM on your PC. Make sure that your X8 is rooted and WinRAR is installed in your computer. It will be required for the extraction of the Custom ROM. Before beginning the installation of Froyo we advise you to make backup of your phone, because this is a vital process and anything can happen in between.

Back your Phone

Switch off you phone and wait for 5 seconds.
Switch on the phone and as the Sony Ericsson Screen flashes press the back key multiple times. This will take you to the xrecovery menu.
In the menu select the option Backup and Restore and then select backup in the next menu.
This will create backup of your phone in a folder inside the SD card in the backup folder inside the xrecovery folder in the SD card
Keep a copy of that folder in your hard drive.

After backed up the phone, you can start the installation of the android 2.2(Froyo) in you phone.

Create a new folder on your desktop and rename it as per your choice. Let’s folder’s name is “subirank”
Now move the downloaded “Android Froyo Custom ROM” to the “subirank” folder.
The Custom ROM is a RAR archive so you need to extract it using WinRAR.
For extracting the Custom Rom just Right Click on the file and then click on “Extract Here”
It will get extracted and “Android Froyo Custom ROM’s” folder will be created.
Now connect your Sony Ericsson XPERIA X8 Phone with your PC via USB cable.
Select “Open Folder to view files” in the Autoplay box and then click on OK.
Now Go To backup folder present inside the xrecovery folder (xrecovery – > backup)
Copy “Android Froyo Custom ROM’s” folder to backup folder from “subirank” folder.
When it’s done, disconnect your phone from your PC.
Switch/Power off your phone and wait for five seconds.
Now Switch/Power on your phone again and as soon as the Sony Ericsson logo flashes on the screen start pressing the back key continuously.
This will take you to the Xrecovery menu. (This happens only when you have installed xrecovery on your phone.)
Now Select “Backup and Restore” in the Xrecovery menu
In “Backup and Restore” click on Restore.
Now you will see two files
1. The backup of your phone
2. “Android Froyo Custom ROM” file
Select the “Android Froyo Custom ROM” file .
It will Ask “Are You Sure”. Select “Yes – Restore”
Now it will start installing “Android Froyo” on your XPERIA X8. Be patient, it will take some amount of time.
After five or six minutes installation gets completed and a menu comes in front of you. Select “Reboot” From That Menu and Press Enter.
Your Phone will reboot and you will see the change. That’s it! Android Froyo get’s installed on your phone. Enjoy.