Flashing Your Cr-48 BIOS

Posted on 02. Jan, 2011 by in Chrome OS, Tutorials

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So, what did you do over your holiday break? Spend time with friends and family? Maybe relax a little bit? Flash your Cr-48 BIOS?

cr 48bios

Ok, so most of you probably wouldn’t dare make an attempt to do this, but some devoted techies spent some time recently doing so, enabling them to load operating systems such as Windows 7 and Mac OS X on their test pilot machines. We can’t condone your activities here, because we’re just passing on the information. If you’ve worked in support or development, however, you probably know a bit about how to do this already but here it is specifically for the Cr-48. Best of luck!

Installing Ubuntu on your Cr-48

1. Put your Cr-48 into developer mode by flipping the switch under the battery. More info here.
2. Let the Cr-48 to boot into setup. This could take 5-6 minutes because it completes a system wipe.
3. You know this part. Select your connection and accept the license.
4. Get to the terminal by hitting CTRL+ATL+T
5. Login at the prompt by typing “chronos” then hit Enter.
6.  Type “sudo su” then hit Enter.
7. You must now download and install Ubuntu by typing “wget -O – http://goo.gl/DlmZS | sh -” then hit Enter.
8. Wait until the computer reboots and follow steps 2-7 to start downloading and installing Ubuntu.

Flashrom Installation and Downloading the New BIOS

1. Once you have Ubuntu is running go to system>administration>synaptic package manager
2. Click on “search” in the Synaptic Package Manager and then type in “flashrom”
3. Go through the flashrom install.
4. Once flashrom is installed download the alternate bios from here: http://www.multiupload.com/2XVXPKS9C9
5. Now set ubuntu as the default os by opening applications>accessories>terminal and typing: sudo cgpt add -i 6 -P 5 -S 1 /dev/sda
6. Now shut down your Cr-48

Taking Apart the Cr-48

You must take the back cover off in order for this to work. Otherwise, the BIOS will not flash.

1. There are twelve screws on the bottom of the laptop. Don’t forget the two located under the rubber feet.

cr 48screwlocations
2. You must very carefully remove the bottom once the screws are removed. Remove the side without the sound port first so you can work the side with the sound port off.
3. Plug in the machine with the bottom off and boot up Ubuntu.

Flashing your Cr-48 BIOS

1.  Make a backup of our current BIOS. Open applications>accessories>terminal and type in “sudo flashrom -r backup.bin”. This will create a backup in your home directory – choose an external one.
2. Extract the bios downloaded previously to the home directory. In the terminal type “sudo flashrom -w cr48.bin”
3. You will see two SPI erase errors. You can ignore these errors. You should then see that the flash has completed and verification that the BIOS has been written correctly.
4. Barring any weird errors, shut down the laptop and install your favorite operating system from an external drive! Don’t forget to set this as first boot in the BIOS.

via xxthe3dmanxx

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Related posts:

  1. The Secret To a Ten Second Boot: Eliminate BIOS?
  2. How to View Your Files in the Chrome OS File Browser
  3. Hexxeh Working on “Luigi” Cr-48 Firmware Toolkit

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24 Responses to “Flashing Your Cr-48 BIOS”

  1. [...] thechromesource,xxthe3dmanxx,Blogspot 分享到: 新浪微博 豆瓣 开心网 人人网 QQ 空间 邮件 [...]

  2. ILYNOW- Android | ILYNOW

    03. Jan, 2011

    [...] OS X / Win 7 等其他操作系统的,但是这个方法实在是够麻烦(感兴趣的可以看这个教程)。之前做出若干自定义版本 Chromium OS 的 Hexxeh [...]

  3. 刷新 BIOS 破解 Chrome OS 本本 Cr-48,实现安装任何系统 | liansi.org

    03. Jan, 2011

    [...] via thechromesource,xxthe3dmanxx,Blogspot [...]

  4. [...] Chrome OS-powered Cr-48 netbooks on hand, you might be interested in an involved tutorial over at The Chrome Source that will ready your ChromeBook for Windows 7 and even OS X. But it is involved; the list of steps [...]

  5. [...] Chrome OS-powered Cr-48 netbooks on hand, you might be interested in an involved tutorial over at The Chrome Source that will ready your ChromeBook for Windows 7 and even OS X. But it is involved; the list of steps [...]

  6. philip

    16. Feb, 2011

    hey what is the ubuntu’s password??
    the passwors is required on synaptic package manager
    WHAT IS THe PASSWORD??

  7. philip

    16. Feb, 2011

    oh sorry i found it by googling
    anyway password is user

  8. jack

    16. Feb, 2011

    so, I’m kinda an idiot and forgot to set ubuntu as default OS. Is there a way to get back to it??

  9. Philip

    16. Feb, 2011

    @ jack
    follow these steps then you can boot with ubuntu

    1. Put your Cr-48 into developer mode by flipping the switch under the battery. More info here.
    2. Let the Cr-48 to boot into setup. This could take 5-6 minutes because it completes a system wipe.
    3. You know this part. Select your connection and accept the license.
    4. Get to the terminal by hitting CTRL+ATL+F2
    5. Login at the prompt by typing “chronos” then hit Enter.
    6. Type “sudo su” then hit Enter.
    7. You must now download and install Ubuntu by typing “wget -O – http://goo.gl/DlmZS | sh -” then hit Enter.

    Now set ubuntu as the default os by opening applications>accessories>terminal and typing: sudo cgpt add -i 6 -P 5 -S 1 /dev/sda

  10. [...] "before" installing Windows 7? If that is what you meant, yes you can follow this guide: here. Do this in your own risk. Good [...]

  11. Brandon Lee

    02. Mar, 2011

    Why do we have to remove the cover for the bios flash to work?

  12. koman

    05. Mar, 2011

    @philip use the same password as you logged in with

  13. [...] I can't remember if its the "Isyde" Bios or what ever its called. But this link >> Flashing Your Cr-48 BIOS << was what I used to flash my Bios and it worked great. Please keep reading cause I got more [...]

  14. MrG

    29. Mar, 2011

    Why do we need to remove the bottom cover of the laptop and boot to UBUNTU without the cover for the BIOS flashing to work? Can this step by bypassed?

  15. Gregg

    11. Apr, 2011

    No really. Why do you have to remove the bottom cover?

  16. Brett

    19. Apr, 2011

    Getting 307 error on the qdh.latesttwo.info links.

  17. Brett

    19. Apr, 2011

    307 Temporary Redirect ^^

  18. Austin

    09. May, 2011

    You have to remove the bottom cover because there is a piece of metal that bridges two pins the BIOS chip. The BIOS chip cannot be taken out of “Write Protect Mode” unless the two pins are unbridged. The only way to do that is to remove your case.

  19. [...] to flash the BIOS. Did the flashrom stuff. Went to flash the BIOS via the method listed here: ( Flashing Your Cr-48 BIOS | thechromesource – Google Chrome and Chrome OS News and Forum ). I got up and walked away, and when I came back, it looked as if it finished. There were some [...]

  20. TOGswitch

    19. May, 2011

    @ Austin, is this ON the bottom, or on the BOARD? Important stuff to know.

  21. MGN001

    19. May, 2011

    How do I boot from USB? It tell me “Remove disks or other media. Press any key to restart.”

  22. question

    02. Jun, 2011

    How do i make it so that it always boots up in windows 7?

  23. chi

    11. Jun, 2011

    its so hard to unscrew those little screws, anyone help!!!

  24. John McDonnell

    13. Jun, 2011

    The Luigi script no longer works, but a simple guide to properly flash the Cr-48 BIOS (and back up your original BIOS) along with all of the necessary files is available here:

    http://cr-48.wikispaces.com/Flash+BIOS/

    The Cr-48 Wiki also includes guides to:
    - Open the Cr-48 case
    - Install Windows 7
    - Install Ubuntu
    - Enable GPS
    - Much more!

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