OLPC Firmware q2b87

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OLPC Firmware B2 Release q2b87 - 2007-04-03

This is the firmware for the B2 boards. It will also work on B1 and ATest. Do not use it on pre-B1 boards - it will brick them because of the EC microcode.

Download it from here: q2b87

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Changes since OLPC Firmware q2b85

B86 release was skipped since it was quickly outdated

• EC PQ2B87
  • Change the over voltage protection from 0.775 to 0.785 for LiFePO4 batteries.

• EC PQ2B86
  • Fix 100 capacity with NiMH batteries.
  • Fix Trac Ticket #1246. The battery LED flashes red when low battery shutdown occurs.

• OFW svn commit 231 stable branch b167
  • Increase the power-on to enum delay of USB from 500 mS to 1000 mS to fix some really slow USB disks that did not show up in the enum list.

• Linuxbios
  • No Changes from B85

Installation Instructions

• If you have a B1 or B2 system:
  • Detailed upgrade instructions are located here.
  • If your firmware version is earlier than the version in Auto Install Image then you can just use that procedure for the update.
    Note: that this procedure will also upgrade the image in your nand flash -- which is the entire Linux operating system and all the files you may have edited or saved. This means it will ERASE what is in your nand and re-write it. So you will lose any data you have stored on the filesystem unless you back it up. If you do not want your files erased, then please use the first procedure above.
  • Do NOT use olpcflash to write new firmware images. Doing so will erase the manufacturing data that was added at the factory.
  • After you reflash, you must power cycle by physically removing power from the system. A warm-start or button-induced restart is not sufficient. Please remove both the battery pack and wall adapter for 10 seconds.

• If you have an ATest system
  • If you use olpcflash to write this image, you must use the --brick option.
    Example: olpcflash --brick -w image.rom
    The --brick option makes olpcflash update your EC code as well as the firmware.

Known issues

• JFFS2 does not handle ECC
• Directory symlinks have a problem.