My new iPhone 3GS shuts down my computer when I plug it in

latest iOS possible:
iPhone 3GS = iOS 6.1.6
to update to iOS 5 is only possible with connecting the device to iTunes on a computer.
- Plug the iPhone to your computer and open up iTunes under devices click on your iPhone and then click on check for update.

buy original battery

try a hard reset: press and hold the sleep and home button together until the white apple logo shows then let go, your phone should power up as normal.

the main difference between the iphone 3g and iphone 3gs is the speed. but here are the specifications for both phones
weight: the 3gs is slightly heavier at 135g memory: iphone 3g only has two options an 8gb or a 16gb whereas for the iphone 3gs it has 8gb/16gb/32gb camera: the iphone 3g has 2mp camera that can only take pictures while the ihpne 3gs has a 3.15mp camera that can also capture videos cpu/processor: iphone 3g has ARM 11 412 MHz, PowerVR MBX-Lite graphics while the iphone 3gs has 600 MHz ARM Cortex A8 processor, PowerVR SGX535 GPU. So the 3gs is faster and it means less or no lag on apps
the 3gs has a digital compass
and the 3gs has a longer battery time than the 3g.
to summaarize, the iphone 3gs is faster, has longer battery life, and has a bigger memory (as it comes with a 32gb version).

i think its beacause of battery, buy a new one then charge it 8hrs. do not use your phone, charging while your phone is switch off is good for the battery.

your iphone needs to be synced with itunes or activated with your service provider.

1. open itunes on your computer
2. plug your iphone in to a usb port on your computer
3. follow the instructions on the screen

If your using a MAC try the below steps as this worked for me:

1. User - Library - Prefrences - com.apple.iTunes.plist
2. Delete that com.apple.iTunes.plist
3. Restart the computer. It should recognise.

If your using a PC the steps are lengthy, and the steps are:

Restore I-Phone
1) Close all programs and restart computer.
2) Open iTunes and plug in powered off iPhone with direct USB connection.
3) If iTunes fails to connect to iPhone...continue to #4, if it does...restore.
4) Shut DOWN iTunes again.
5) Power OFF the iPhone & Disconnect from computer. (Power off two ways-one will work, hold home and sleep button until off or just hold sleep button until off)
6) Hold down Home button & connect to computer using direct connected USB cable (keep holding down the home button until iTunes sees it).
7) It should go into recovery mode and iTunes should recognise it.
8) If you want to recover to previous software version, Hold Alt/Shift and click restore in iTunes. Then select the old update version.

If the above steps doesnot work then try the below steps:

1. Turn the iPhone ON
2. CONNECT it to the computer with a DIRECT USB connection.
3. Make sure iTunes is open so you'll know when it enters DFU mode.
4. HOLD the Power/Sleep-Wake button AND the Home button for 10 seconds.
5. RELEASE only the Power/Sleep-Wake button and continue to hold the Home button.
6. WAIT until iTunes recognizes the phone in DFU Restore mode (in Windows a bubble pops up saying it recognized new hardware "DFU Mode" or something to that effect)
The last step may take SOME TIME, like, say, even 60 seconds or so.
The screen should be OFF (black), if you see the "Connect to iTunes" logo, START OVER.
It may take a few tries to do the steps just right, just reboot
(hold both Power/Sleep-Wake AND Home until the Apple logo appears and the phone turns back on) then try again.
7. Then restore the iphone

-Plug one end of the cord into your phone and the other in your computer
-Remove the cord in your computer, leaving the cord in the phone still plugged in
-Hold both the home button and on/off button on the phone
-Once the screen turns off, let go of the on/off button but continue holding the home button
-Plug in the other end of the cord in your computer while still holding the home button on the phone
-Once the apple logo appears, continue holding until you see the plug into itunes screen on your phone
-Click restore.

Hope this should resolve your issue :)

ohh...if it is appear a blue screen,....thats what they call a PHANTOM PROBLEM...

you must be install first the iPHOne before you connect it to the PC

Solution:
http://rubayathasan.com/iphone/iphone-3gs-camera-not-saving-pictures/

put it in dfu mode by pressing power and home at same time, once off, hold home button down and connect to computer and it will make you restore, that is the only way if you having problems, hope this helps, if you want to trade for my 3g jailbroken already and 3.0 is installed, if you upgraded to 3.1 you might not be able to jailbreak anymore thats what the word is right now anyways, my email is [email protected]