Upgrading firmware
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Steps of Upgrading Firmware
G1G1 donors: You can also just wait for Update.1. Update.1 will have Q2D08 (unreleased as of January 5th, 2008) system firmware.
Advanced users: To do unsafe firmware upgrades you have to have developer key. If you lose power during a firmware upgrade you will brick the laptop.
1. Make sure your battery is charged.
2. Plug up the XO on external power.
- Steps 1 and 2 are NOT optional. The XO will not upgrade system firmware unless it has a battery and external power.
3. Open the Terminal activity 
4. Type the following (press the Enter key after each line):
wget http://dev.laptop.org/pub/firmware/q2d07/bootfw.zip su - cp bootfw.zip /versions/boot/current/boot/ reboot
- Step 4 can also come from a USB key if you don't have networking available. Plug in the USB key and locate bootfw.zip (should be under /media/name_of_usb_key, where name_of_usb_key is the name of your usb key when you formatted it -- a PC or Mac will display the name once the usb key is plugged in). Then type the following (press the Enter key after each line):
su - cp /media/name_of_usb_key/bootfw.zip /versions/boot/current/boot/ reboot
5. The laptop will then reboot twice more on its own. (Once to enable writing to the flash and then a 2nd time after its done updating.)
The XO will only upgrade the system firmware if it finds that the current version is earlier than whats in bootfw.zip