How to disabled xo security without developers key

Richard A. Smith richard at
Sat Sep 17 15:26:22 EDT 2011

On 09/15/2011 12:55 PM, Alan Jhonn Aguiar Schwyn wrote:

 > Can anyone tell me how to get OK prompt without developers key??

In secure mode getting to an OK prompt won't help.  The firmware lockout 
is enabled.  The only way to upgrade firmware in secure mode is to 
disable with a developer key or use a signed firmware build.

> And if you don't like it.. You can use the Serial Port on the XO... No?

No you can't. The firmware lockout happens before you get an ok prompt 
on the serial port.

Richard A. Smith  <richard at>
One Laptop per Child

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