After flashing new ROM, most of the time, your APN will be deleted. You will not be able to browse internet if you turn off your WiFi (to test your APN). Means your mobile will not be able to connect via 3G/2G network. No worry....check out steps below for our Malaysian friends :)
Use APN Manager to backup and restore your APN setting. Download here. FREE from android.market
Download APN setting here
Note: It's takes 3-5 minutes to load. Please wait.....
Note: Maxis Malaysia user. To get your APN just call 123, listen to the instruction or key in 121. After a few seconds, Maxis will SMS the APN to your phone. But, it will send Maxis 3G setting only. You will not be able to switch to 2G for battery saving.
Tested. It works. Thanks Seng Wai