but if you want to do it yourself think about how to get cydia installed on the iphone passing all those securities
It is okay to jailbreak your iPhone 3g. The only downside to jailbreaking your iPhone is that you will loose your Apple warranty.
Simply jailbreak your iPhone 3G or iPhone 3G and install Cycorder.
using redsn0w
You need to download redsn0w to jailbreak your device.
yes
PwnageTool 4.2
The iPhone 3G already have a camera that is capable of recording video. The inability to record video on the iPhone 3G by default is a software limitation rather than hardware limitation. To record video on an iPhone 3G, simply jailbreak your iPhone 3G and install Cycorder.
iPhone/iPod Touch/iPad iPhone: 1G, 2G, 3G, 3GS, 4 iPod Touch: 1G, 2G, 3G iPad
Multitasking does not work on a iPhone 3G, You must Jailbreak your Phone to do that (Beaware that your phone would be very slow with Multitasking)
Yes, use PDAnet to connect it. To get PDAnet you will have to jailbreak your iphone.
This depends on the interpretation of the question. iPhone 3G has a camera that is capable of taking both video and still image, but Apple has limit the iPhone 3G camera to only taking still image. It is possible to take video on the iPhone 3G using Cycorder, but doing so require you to jailbreak your iPhone 3G.
The iphone 3g is the third generation iphone , is that what you are asking