Firmware: Difference between revisions

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* q2e22 - 2008-11-06 [[OLPC Firmware q2e22]] Possible manufacturing release for production with new touchpad
* q2e22 - 2008-11-06 [[OLPC Firmware q2e22]] Possible manufacturing release for production with new touchpad
* q2e21 - 2008-10-31 [[OLPC Firmware q2e21]] Maintenance release to manufacturing
* q2e21 - 2008-10-31 [[OLPC Firmware q2e21]] Maintenance release to manufacturing
* q2e20 - 2008-10-24 [[OLPC Firmware q2e20]] Formal release of q2e19f which shipped on prebuild machines
* q2e20 - 2008-10-24 [[OLPC Firmware q2e20]] Formal release of q2e19f which shipped on prebuild machines (works with B2 mechanics)
* q2e19 - 2008-10-03 [[OLPC Firmware q2e19]] For prebuild with new keyboard controller
* q2e19 - 2008-10-03 [[OLPC Firmware q2e19]] For prebuild with new keyboard controller
* q2e18 - 2008-09-17 [[OLPC Firmware q2e18]] 8.2.0 release version
* q2e18 - 2008-09-17 [[OLPC Firmware q2e18]] 8.2.0 release version

Revision as of 01:14, 21 January 2009

  This page is monitored by the OLPC team.

This firmware goes in the little 1 MB SPI flash that's used for booting, not the 1GB NAND flash (or 512MB in earlier prototypes) used for the OS image and user data. The SPI flash contains the Embedded controller ("EC") firmware, Open Firmware, and 2k Manufacturing Data. See Firmware SPI FLASH Map or its dia source file.

Updating the firmware

Upgrading the XO to a new release usually updates both the firmware in the SPI flash and the operating system software in the NAND flash. Users should update to the latest stable release to get the latest stable versions of both.

Users can also upgrade only their XO's firmware to the latest official (signed) firmware, see Upgrading firmware

Developers who have an unsecured laptop or a developer key have more options.

Note: Once you upgrade to the Q2Cxx series of firmware do not downgrade to Q2Bxx! Doing so will destroy the manufacturing data. Downgrading from Q2F01 to Q2C01 will "Brick" your XO-1 :-(

Firmware releases

The latest release is the first in the list:




Do not downgrade from C series to B series