HI
BE FORE U FLASH ANY COOKED ROM THE HARD SPL IS A MUST SEE BELOW LINK FOR THE SAME
NOTE : u do have the risk of loosing ur warranty if HSPL is done but in the below link details are also give on how to get back ur original spl if u need to give ur phone for warranty purpose
kindly do this at your own risk 
Im just the provider of this all credit goes to Cmonex/olipro/ olinex of XDA
Instructions:
read this if unsure how to install Hard-SPL...
1) download
latest Hard-SPL package (currently v5.20) from attachment, extract to an empty folder.
2) you must Have Phone Synced with PC in Windows Mobile!!!
3)
NEW: internet access is required as the program checks online for updates and license.
4) run
Jade-Hard-SPL EXE on PC, make sure it's launched from a local drive (not through network drive, etc.). if you are on vista, launching as Administrator is strongly recommended, on XP administrator login is required. important: if your AV (norton/symantec mainly) warns about a virus, ignore it, it just doesn't like the packer I used to pack the program.
5) if possible, always use Automatic flash mode (for uses of Manual mode, see troubleshooting section)
6) it will ask you to wait while it prepares for the flashing, press OK. follow steps in the program and then in the RUU.
7)
some notes: it should go through without any error messages, if one does pop up, then please follow the instructions included in the error text. if no specific instruction is shown, then ask for help in the thread, but this should not ever occur (as this means a really fatal error occurred).
more notes: when RUU says it will hard reset, do not worry, it is not going to do that. also when it says the flash will take 10 minutes, ignore that, it will only take a minute or so.
device should go to a tricolour screen now that says 1.40.1000 (not .0000!!!), this is the SSPL version, which is temporary.
9) SPL flashes, device automatically reboots, job done.
10) to confirm you got it installed, go into bootloader mode (tricolour screen!) and verify the screen shows 2.32.OliNex, which is the Hard-SPL version.
if it is 1.64.xxx instead then please make sure you actually download last version (v520) and flash using that. 2.32.OliNex is the correct Hard-SPL version.
HSPL LINK :
http://forum.xda-developers.com/showthread.php?t=483465