Firmware: Difference between revisions

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=== XO-1.5 ===
=== XO-1.5 ===
<span style="color:red; ">WARNING! [[XO-1.5]] Firmware will NOT work on a XO-1.</span>
<span style="color:red; ">WARNING! [[XO-1.5]] Firmware will NOT work on a XO-1.</span>
* q3a29 - 2010-03-08 [[OLPC Firmware q3a34]] Many fixes - New mfg test visuals
* q3a35 - 2010-03-10 [[OLPC Firmware q3a35]] Fixed possible fs-update problem in previous release
* q3a34 - 2010-03-08 [[OLPC Firmware q3a34]] Many fixes - New mfg test visuals
* q3a29 - 2010-01-25 [[OLPC Firmware q3a29]] Preload for C-ramp SMT build - lots of fixes
* q3a29 - 2010-01-25 [[OLPC Firmware q3a29]] Preload for C-ramp SMT build - lots of fixes
* q3a26 - 2010-01-05 [[OLPC Firmware q3a26]] Ext2 fixes; Lid switch fix.
* q3a26 - 2010-01-05 [[OLPC Firmware q3a26]] Ext2 fixes; Lid switch fix.

Revision as of 18:09, 10 March 2010

  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:

XO-1.5

WARNING! XO-1.5 Firmware will NOT work on a XO-1.


XO-1



Do not downgrade from C series to B series