Flashing the Neo 1973
This describes how to update your openmoko to the latest software. We'll update the kernel, the root filesystem and optionally u-boot (new uboot is only recommended for Phase0 phones, because otherwise you get kernel crashes later due to the first version misconfiguring the RAM).
|WARNING: You should not flash uboot on a Phase 1 phone without a very good reason|
Files to download
Necessary files are at:
- http://chooseopen.com/openmoko/build/ (Unofficial, temporary location of more current builds.)
- dfu-util (the precompiled binary on http://buildhost.openmoko.org is for Linux/i386)
- for phase 0 (Bv03) phones:
- Tested by a few people:
- Tested by hrw:
- Tested by a few people:
- for phase 1 phones, uboot update should not be necessary.
Putting the device into DFU mode
You'll need to boot your openmoko into uboot menu. To do this:
- Unplug all usb devices from the host.
- Hold AUX button while pressing POWER button.
- The uboot menu should appear.
- Select "Set console to USB" via AUX and POWER button
- Plug Neo1973 into host with supplied USB cable. (Plug the phone directly into the host not via a hub.)
Note: Some devices have been reported to turn off after a short period of inactivity while on the uboot menu. To avoid this, simply press the AUX button every 30 seconds or so.
Actually flashing things into the device
Double check that u-boot matches your hardware version. Flashing u-boot is really a critical part. You probably only want to do that on phase0 phones.
Note: It may be necessary to run the application as root (at least in ubuntu).
To update u-boot:
Warning: Do not update u-boot unless you have debug board or are really sure about what you are doing. Flashing a wrong u-boot image will brick your device! Note especially that image below is for GTA01B_v03, not GTA01B_v04
./dfu-util -a 1 -R -D u-boot-gta01bv3-r8_70124c2602ae2d4c5d3dba05b482d91548242de8_0_2040.bin
To update the kernel:
./dfu-util -a 3 -R -D ./uImage-126.96.36.199-moko10-r0_0_1883_0-fic-gta01.bin
To update the root filesystem:
./dfu-util -a 5 -R -D ./openmoko-devel-image-fic-gta01-20070501054014.rootfs.jffs2
...now, you'll end up with system that boots, but does not see audio/SD card. You'll need to download corresponding modules.tgz and copy them over to openmoko. - UPDATE: GTA01 phones appear to not need this step.
Old versions of uboot are buggy: You may have to press the aux button few times so that machine does not sleep while flashing. It also does not erase rootfs before flashing it... to do that, do minicom /dev/ttyACM0, then nand erase clean rootfs . Unfortunately, old versions of uboot are not really usable, because they fail to enable high 64MB of RAM, and you get nasty crashes after kernel boots.
If you're facing errors in seemingly random places during the flashing of images, most likely the USB hub or cable through which your Neo1973 is connected, is of too poor quality. It is recommended that you always connect the phone directly to the host when using dfu-util.If dfu-util reports a message like the following, before it starts flashing:
Resetting USB... not at least 2 device changes found ?!? Lost device after RESET?just retry the command - it should work on a second run.
This message can also occur if you connect the usb cable before you are in the bootloader menu. You must carefully follow the sequence described at the beginning of this article and not connect the USB cable too early.
dfu-util does not seem to be able to download files if run from linux running under VMWare on a Windows OS host.
See other notes on Dfu-util page.