SYSTEM ERROR - so i downloaded the file on a USB drive and right its plugged in my xbox but...

In reference to the support links posted above, here is the solution to your specific error code.

support.xbox.com/.../software-update-errors

The console is looking for a previous version of the system update. Follow these steps:

Find a USB flash drive with at least 90 MB of free space.

Plug the USB flash drive into a USB port on your computer.

Note The USB flash drive must use the FAT32 file system (Windows).

Download the system update for your error code

http://tinyurl.com/29njb3k

Click Save to save the console update .zip file on your computer.

Unzip the file. If you're using Windows XP, Windows Vista, or Windows 7, double-click the .zip file to unzip it.

Copy the contents of the .zip file to the root directory of your USB flash drive.

Unplug the USB flash drive from your computer.

If there is a disc in the console, remove it.

Turn off the console.

Remove all console storage devices, including any USB flash drives, external hard drives, or the internal hard drive on the Xbox 360 S console. Learn how to remove the hard drive.

Plug the USB flash drive with the update into a USB port on console.

Turn on the console. When the console starts, the software update should automatically start.

Try Copy to a USB flash drive

Note: The USB flash drive must use the FAT32 file system.

1. Download the update file: www.xbox.com/system-update-usb

2. Unzip the file.

3.Copy the contents of the .zip file to the root directory of your USB flash drive.

4.Plug the USB flash drive into a USB port on your Xbox 360 console.

5.Restart the console.

When the console restarts, the installation program starts automatically.

ok try this:

Copy to a USB flash drive

If you cannot connect your Xbox 360 console to the Internet, you can copy the console update from your computer to a USB flash drive and then install it on the console.

Note The USB flash drive must use the FAT32 file system.

Plug your USB flash drive into a USB port on your computer.

Download the update file.:
www.xbox.com/system-update-usb

Click Save to save the console update .zip file on your computer.

Unzip the file. If you are using Windows XP, Windows Vista, or Windows 7, double-click the .zip file to unzip it.

(or in your case it click on the .zip and un zip it for mac in downloads)

Copy the contents of the .zip file to the root directory of your flash drive. (click on the first part then hit shift+left click on the content the drag into the USB drive on the desktop)

Unplug the USB flash drive from your computer. (right click=control right click-- and hit eject)

Plug the flash drive into a USB port on your Xbox 360 console.

Restart the console.

When the console restarts, the installation program starts automatically. Select Yes when you are prompted to update the new console software.

and that should work man (this was edited for mac also)

hope that helps

Nothing works. I get a new error code each time. I have done everything from

First, clear your Xbox 360 system cache 3 times.

Power cycle your Xbox 360 console.

Once your console is powered on, try downloading the update again.

to

Plug your USB flash drive into a USB port on your computer.

Download the update file.

Click Save to save the console update .zip file on your computer.

Unzip the file. If you are using Windows XP, Windows Vista, or Windows 7, double-click the .zip file to unzip it.

Copy the contents of the .zip file to the root directory of your USB flash drive (for example, E:\). Do not copy the contents to another folder on the USB flash drive (for example, E:\Files).

Unplug the USB flash drive from your computer.

Plug the flash drive into a USB port on your Xbox 360 console.

Restart the console.

When the console restarts, the installation program starts automatically. Select Yes when you are prompted to update the new console software.

I have tried to connect and download the update at a friends house and i keep getting error codes each time. The error codes are different each time.Here are the error codes in order of getting them. 42FC42FEA0800F080072EE2 42FC000000830080072EE2 42FC00000080020080151911.
There were three other error codes but here is the last one i wrote down. 42FC0000008002008015190B. What the hell did your system update do to my Xbox?

Hi Zweli, my name is Rodrigo. I'm an Independent Advisor and a member of the Microsoft community and I'd love to assist you today.

I am sorry to hear that.

You will need to try a system reinstallation.

Do you have another USB drive you can use to copy the update file?

Make sure to remove your console from the power outlet for 1 minute or so to clear it's cache, before plugging the USB for the system reinstall.

Then, please, follow these steps:

Plug your USB flash drive into a USB port on your computer.

Download the update file:

https://www.xbox.com/system-update-usb

Click Save to save the console update .zip file on your computer.

Unzip the file.

Copy the contents of the .zip file to the root directory of your USB flash drive (for example, E:\). Do not copy the contents to another folder on the USB flash drive (for example, E:\Files).

Unplug the USB flash drive from your computer.

Plug the flash drive into a USB port on your Xbox 360 console.

Plug it in the power outlet and tun it on.

When the console restarts, the installation program starts automatically. When prompted, select Yes to update the new console software.

I hope this helps.

Source:

https://support.xbox.com/help/xbox-360/console/system-updates-info