[maemo-users] [maemo-users] Booting from MMC as a de-bricking method

From: Igor Stoppa igor.stoppa at nokia.com
Date: Tue Feb 13 15:09:46 EET 2007
On Tue, 2007-02-13 at 13:52 +0100, ext Paule Ecimovic wrote:
> Hi, all
>    Is it possible to boot from MMC (assuming one sets up this booting
> option by cloning the 770 on a suitably-large MMC and installing the
> alternate boot loader and all the rest) to recover from a bricking
> flash? Are there bricking scenarios from which it is not possible to
> recover via booting from MMC?

If the part of the bootloader that takes care of loadinig the new
kernel/image/whatever from USB is damaged and also fails to load the
kernel (in fact the device is bricked), then the processor has to be cold
flashed and the MMC doesn't help.

So yes, there are (very limited) situations when the device can be
bricked for good. But iirc somebody has posted inistructions on how to
access the serial port. However the whole process wouldn't be exactly
straightforward since i'm not sure if the flasher tool that is made
public can address cold flashing.

Cheers, Igor

Igor Stoppa <igor.stoppa at nokia.com>
(Nokia M - OSSO /Helsinki Finland)

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