normally, custom firmware is to retain the baseband and the modem version in order to JB and also software unlocked....

if the phone has been updated to 3.1.3 thru itunes, using custom firmware will not change anything to it as the baseband and modem has been updated to the latest version... installing a custom firmware will not changed it back to the old version

is there any charges if i upgrade to os 4 or is it free?

btw safari 4 has new updates....good to install it?

This post has been edited by thefryingfox: May 1 2010, 12:32 PM

don think it will be not free
safari 4 is a browser for ur pc or mac...not for iphone

The last iPhone OS upgrade (2 to 3) was free for iPhone users, but not iPod Touch - had to do with how Apple accounts for revenue differently for the two products or something like that.

Should still be free for iPhone users... I hope. :-)

so far iPhone upgrades are free... for ipod touch is $9.95

kinda weird of u suddenly asking about safari 4 here... but yes

does anyone know when os 4 for iphone will release ?

Apple's page at http://www.apple.com/iphone/preview-iphone-os/ says "Summer" for iPhone / iPod touch & Fall for iPad.

so can expect it around late July for iPhone / iPod touch, and probably around late August / Mid Sept for iPad.

don't worry about buying now, the OS update is free for iPhone / iPad.

This post has been edited by xaw5126: May 7 2010, 03:56 PM

beta3 is release d..
http://www.iphoneos3.com/2010/05/05/iphone...nload-released/
hope can get the official one come out fast...~~

still waiting for latest os 4 come out.. wondering the actual date that come

iPhone can multitasking, then some more won't slow down.. Haha those wm PDA sure no people want ady... Apple win the war..

Hopefully the OS4 comes out on time. I didnt update my iPhone since OS 3.0... Was waiting relaly long for this update.. Multitasking will be really a cool feature to add..

not really true multitasking lol
it just pause the app

not really, some apps like Pandora(shown during the April event) will continue to play music while in the background.

there's talk of GPS apps being able to run voice navigation in the background as well.

i think the proswitcher lagi better~~~

but this is official support, guaranteed to work (on 3G[S] at least) ...

well, at least for Pandora or certain apps only..
read some articles..they got mentioned how iphone os4 multitasking work compare with other multitasking like from android

Is it only me that OS4.0 ideas all come from what people are already doing with their jailbreaked phones?

-Multitask
-change background image
-can create folders to organize apps

I believe these are the main highlights.. so boring.. all the JBers already doing this for quite some time liao >.<

btw i wonder if the OS4.0 multitasking works the same like the JB ones.. I think the JB multitask works quite nicely d, can allow any program to run in background if you choose to.. i think the os4.0 only allow certain programs to run in background only is it?

OS 4 multitasking is supposed to do a better job by allowing only essential services to run in the background. meaning it wont take must memory.

Right now backgrounder just keep the entire app running with all its services if I'm not mistaken.

yes, official like iphone lolbluetooth?

Like that i'll stick with backgrounder lol u're in control on how many apps u want to open ma.. Heh