After long search i found the correct soluion for formatting android os to for sony ericsson W8/X8. Hai friends updating Android OS have two types: 1. Changing ROM without unlocking bootloader (this support only particular rom) 2. Changing KERNEL and ROM by unlocking bootloader (this will allow you to change recent android jelly bean). 1: ROOT Root your mobile by using x8tool, Here the link for x8 tool: x8tool Password for file is: irukaveandiyathutha Before rooting: Goto Setting-->Application-->Development--> "tick the USB debugging box". Its must and then connect your usb cable to your system and mobile. Open the file shown in the below picture. Select 1 press Enter. Select 2 and press Enter for rooting. After finish reboot your mobile. If you already rooted just skip this step. Don't install the xrecovery from x8tool for w8. 2: Busybox: Download and install the busybox, Here the market link: busybox If you alread rooted or intalled the busybox, just skip this. Dont install the busybox more than one time, it may cause the os during flashing. 3: Root Explorer Dowload and install the Root Explorer, link is: Root Explorer Root Explorer 4: Baseband Now we want to install the supported Baseband, The link is: Flash tool Download the above link and extract the file to your computer. Open the file in the baseband folder. dont connect the usb cable, before it says. click the FLASH button, select the x8i device that means baseband_015. then click OK Button. after click OK button they said to connect your mobile, Switch off your mobile press and hold the back key then connect the usb cable. Now you successfully installed the baseband. Then turn on the mobile. 5: XRECOVERY Download the xrecovery file from the below link. The link for xrecovery is: xrecovery After dowloading exract the file, it have BUSYBOX, CHARGEMON, CHARGER, Send the four file to sdcard from your computer. Then open the root explorer which is already you installed. Goto sdcard copy the BUSYBOX, CHARGEMON, CHARGER, where you stored already. Press the back button, Paste the copied file to system-->bin--> Next step is very important we want to set the permission for that four files. If we not set correct permission your mobile will hang on sony ericsson logo during start up. For each four file we have to set the permission. Press and hold the file, a popup will appear, In that select the PERMISSIONS. The permission must be as rwxr-xr-x See the below picture Select the mount read/write and Paste to system/bin: Press and hold the file a popup will appear: Select the PERMISSIONS Next popup will appear for selected file See the next image, its very important and must. Select the permissions like above picture, and check twice whether you selected correctly or not. Each four file (BUSYBOX, CHARGEMON, CHARGER, you have to select the permissions like this only, it must, otherwise your mobile will hang on sony ericsson logo at the start up. 6: ROMS ROM: ROMS: ginger xperia v10 ginger xperia v24 ginger ultimate v1 gingerDX v22 ROMS: ICS kernel : nAa-ICS-kernel-04 ICS ROM: ICS ROM (minicm9) for all types of rom and kernel click here: Roms and Kernels Dowload the android roms, what ever you want. Sent the rom to sdcard. gingerDX v22 is best for w8/x8, but its my decision only, you have download what you like. 7: Installation Now Goto: Setting-->Application--> tick the unknown sources and, Goto : Setting-->Application-->Development--> "tick the USB debugging box". Its must. Now turn OFF the mobile wait 5 second, then turn ON the mobile. If you seen the sony ericsson logo while turn on, then press the back button multiple time until they goto xrecovery mode. After enter the xrecovery mode use volume button to scroll up/down and home key to select. select the FACTORY RESET(FULL WIPE)--> YES (to reset the custom rom) then come back. Then goto INSTALL CUSTOM ZIP-->CHOOSE CUSTOM ZIP FOM SDCARD-->select GingerDX by using home key, ( you can choose what ever rom you like). Now your rom will installed it may take some time. After install sucessfully, reboot your device, 1st start up may be take some more time. I hope it may helpfull to you. sathish kumar