Sunday 25 October 2015

How to remove Enterprise Enrolment from Acer C720 (and other chromebooks) [GUIDE]



Stuck with a enterprise managed Chromebook bought second hand and unable to remove it? Here is how to 'Remove Enterprise Enrollment' from Acer C720 Chromebook (and will work for others also)

The procedure is as follows (for a Acer C 720 Chromebook) however it is the exact same for most other models the only differing part is location of the read/write screw.

Step 1: Turn off Chromebook, unplug and remove all the screws from the base.
Step 2: Remove the base off and locate the read/write protection screw
Here it is on the C720 at location 7:



Step 3: Screw the base on with one screw (because there is a pressure switch that won't let you start it up without having the base on)
Step 4: Plug in and go into Recovery mode (Hold Esc + Reload and press the power key). Release keys when you see the screen light up.
You'll see "Chrome OS is missing or damaged" screen
Step 5: Press Ctrl + D then enter
You'll see "Chrome OS verification is turned off"
Step 6: Press Ctrl + D and the CB will restart into developer mode.
Note: If it tells you administrator has disabled developer mode perform a hard reset by unplugging the battery internally in the device, disconnecting the power and holding down the power button for 60 seconds.
Step 7: Once in developer mode (it'll give you a warning screen then continue to boot up as usual after a few beeps) Press the keys Ctrl+Alt+-> (F2) to launch terminal
Step 8: Enter the following commands:

chronos
sudo su
vpd -l (display serial number and device info)
vpd -s “serial_number”=”0000000000X” (write serial #, can replace 0000000000X with anything you like) must be all CAPS and numbers.
(takes about 15 seconds)
vpd -l (to check change is successful as it doesn't give you any confirmation)

Step 9: Reassemble with all screws incl read/write. Reboot and turn OS verification back on.

Step 10: Enjoy your non enterprise enrolled C720 (or other) chromebook.

Step ?: (optional if you are getting error flashromPartialWrite() clean the contacts that were under the screw with isopropyl alcohol or meths to make sure there is no continuity between the points from wear.

** Note: I am not responsible for you damaging your device in any way **

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