u misunderstand my question edi,wat i mean is

if official GB out edi ..do i need to unroot (i already rooted my phone)
my phone to do the update ...thx

having the root word in your kernal dosent mean its rooted lah  Root means having superuser installed in your phone.

Go apn there delete maxis wap n maxis mms,just left the maxis 3g internet.go into it,set APN type to 'mms' only,not 'internet+mms' or 'internet'.then tick ur packet data.after sending n receiving the data will auto on n off.no need to monitor.
use auto mode gsm/wcdma(3G) sometime will failure sending n receiving.just change to gsm(Edge) mode,work perfectly.so far no prob for me(maxis line too).u can try it out.

when u use data(buy internet time) only u change back to 'internet+mms' n use wcdma mode(dun use auto mode,will cause line keep dc).