No problem, you said backup, yes, it's a good idea to do backup, if anything happened, just do the restore, no need to re-flash back 

For backup, I'd prefer xRecovery, here http://forum.xda-developers.com/showthread.php?t=878426
The installation seems to be easy to follow.
To activate

It's better to test 1st whether it's working or not
How To JIT: http://forum.xda-developers.com/showthread.php?t=877565 (I'll explain again with picture  )

1) Download JIT http://bit.ly/JiT-toggle

2) Open CMD (Command Prompt) and change directory adb folder. Type this command

the file build.prop being pulled out to the folder, as below: make 2 copies of the build.prop file, 1 is original, 1 is modified

3) Open the file build.prop with notepad. Modify it as below
Change
dalvik.vm.heapsize=30m
debug.sf.hw=1

add this at the end:
dalvik.vm.execution-mode=int:jit
save the file.

4) Extract and Copy JiT-toggle-0.1 folder to the SDcard.
5) Inside JiT-toggle-0.1 folder, copy & overwrite original build.prop to vmlibs_stock. Copy & Overwrite modified build.prop to vmlibsv2
picture below

6) Next, type

then

important: check your phone, superuser request will pop out once you type su, allow it. In case it's not pop out, manually go to superuser, and allow it. Otherwise you'll get permission denied.
7) Type

important: in your phone, Turn off USB storage (unmount). Otherwise you'll get error can't cd to sdcard/JiT-toggle-0.1
8) Type

your phone will reboot and you'll have jit enabled 

Below is the picture

Before JIT:


After JIT:


Feel free to modify, in case I forgot anything 

p/s: Remember to install xrecovery 1st, sediakan payung sebelum hujan 

yes, you can but you need to decrypt,convert and extract on your own using tools,
the source is for developers to compile it  and use it to build roms

My friend planning to buy this phone. Cost only RM800 at SE shop. The problem is the X8 screen might not support all the apps in the market according to the SE sales guy.

So far any apps that you guys find that is not support by X8 due to the screen?

hi all can anyone help me??
i wan to delete all the contact in x8 but donno how to mark all and delete dont tell me i need to delete 1 by 1 ;(