With a lot of effort (back then when not much was known) I flashed my LG Chromebase (22CV241) to use Coreboot and installed Ubuntu 14.04 LTS on it.
For a while I wanted to reinstalled ChromeOS since I used it for email and viewing YouTube/Twitch only. But since I didn't saved the original BIOS file I couldn't.
Until I came across mrchromebox's script which appeared to download the BIOS from the web, and low and behold it worked.
These are the steps.
Since I already ran Ubuntu on it, I could just download the script and run it:
$ cd ~; curl -L -O http://mrchromebox.tech/firmware-util.sh; sudo bash firmware-util.sh
It looks like this:
I didn't reboot yet but used the following steps to create the Chromebook Recovery Utility to create a USB restore stick.
$ curl https://dl.google.com/dl/edgedl/chromeos/recovery/linux_recovery.sh $ chmod +x linux_recovery.sh $ sudo bash linux_recovery.sh ====================================================================== This tool is in maintenance mode. Try the new Chromebook Recovery Utility on Chrome OS, Windows, or Mac. For more information, visit http://www.google.com/chromeos/recovery. ====================================================================== Working in /tmp/tmp.crosrec/ Downloading config file from https://dl.google.com/dl/edgedl/chromeos/recovery/recovery.conf If you know the Model string displayed at the recovery screen, type some or all of it; otherwise just press Enter: MONROE This may take a few minutes to print the full list... There are up to 249 recovery images to choose from: 0 - <quit> 113 - LG Chromebase (22CB25S) channel: stable-channel pattern: ^MONROE .4.* 114 - LG Chromebase (22CV241) channel: stable-channel pattern: ^MONROE ..* Please select a recovery image to download: 114 ERROR: There is not enough free space in /tmp/tmp.crosrec (it has 1606MB, we need 2829MB). Please free up some space on that filesystem, or specify a temporary directory on the commandline like so: WORKDIR=/path/to/some/dir linux_recovery.sh ron@ron-chromebase:~/Downloads$ df -k Filesystem 1K-blocks Used Available Use% Mounted on udev 4046444 4 4046440 1% /dev tmpfs 811580 1232 810348 1% /run /dev/dm-0 6815456 4802424 1643780 75% /
Uh oh, not enough space.. I fixed it using the dpigs tool:
$ sudo apt install debian-goodies $ dpigs -H 176.1M firefox 156.2M thunderbird 149.2M linux-image-extra-3.16.0-77-generic 149.1M linux-image-extra-3.16.0-30-generic 149.0M linux-image-extra-3.16.0-45-generic 121.2M linux-firmware 119.1M liboxideqtcore0 111.0M libreoffice-core 72.6M libreoffice-common 61.6M linux-headers-3.16.0-77
Remove the biggest packages (leaving the newest kernel there ofcourse), after freeing up enough space I re-ran the recovery script.. it went on like this:
Downloading image zipfile from https://dl.google.com/dl/edgedl/chromeos/recovery/chromeos_12739.94.0_monroe_recovery_stable-channel_mp-v2.bin.zip ... I found 2 USB drives. We need one with at least 2215MB capacity. 0 - <quit> 1 - Use /dev/sdb 7747MB Kingston DataTraveler 102 2 - Use /dev/sdc 1039MB Kingston DataTraveler II+ Tell me what to do (or just press Enter to scan again): 1 Is this the device you want to put the recovery image on? /dev/sdb 7747MB Kingston DataTraveler 102 You must enter 'YES' (all uppercase) to continue: YES I'm really going to erase this device. This will permanently ERASE whatever you may have on that drive. You won't be able to undo it. /dev/sdb 7747MB Kingston DataTraveler 102 If you're sure that's correct, enter 'DoIt' now (case is important): If you're sure that's correct, enter 'DoIt' now (case is important): DoIt Installing the recovery image unmounting... copying... (this may take several minutes) Installing the recovery image unmounting... copying... (this may take several minutes) 553+1 records in 554+0 records out 2323644416 bytes (2,3 GB) copied, 982,197 s, 2,4 MB/s Done. Remove the USB drive and insert it in your Chrome notebook. Shall I remove the temporary files now? [y/n]
Rebooted with the recovery USB inserted and restored the ChromeOS by following the steps on-screen.
All fine it booted ChromeOS, but I could get it out of developer mode using SPACE BAR, because of this error:
"WARNING: TONORM prohibited by GBB FORCE_DEV_SWITCH_ON"
If you try to boot with it set you'll see the dev mode screen, but pressing spacebar will cause a beep and this message.
To get back to normal behavior I did this:
* Boot into developer mode
* Switch to console shell (Ctrl-Alt-F2)
* Login as root and run this command:
# /usr/share/vboot/bin/set_gbb_flags.sh 0
It looks like this, so even though I got a lot of warnings it worked, and I could enable the Check OS settings again upon next boot.
WARNING: It deletes locally saved data and settings, you have to setup your ChromeOS from start.