[U-Boot] How to boot a newer version of u-boot from a older one?

[Wolfgang Denk]

Dear Bear,

please keep the mailing list on Cc:.

In message <4DEB3B83.8010608 at Gmail.com> you wrote:
>
> I sent that email via Thunderbird as Plain Text. Maybe it caused by my 
> UTF-8 encoding? I am very sorry about that.

I don't know.

> > For I have no USBTAP, there are no way for me to flush either NOR Flash
> > or NAND Flash, so I am afraid if I install my u-boot to NOR Flash and
> > that u-boot cannot run correctly, my board would be unavailable. So I
> > wanna boot the latest version of u-boot from the original one. I tried
> > these:
> > => tftp 0x01000000 u-boot.bin
> > => go 0x01000000
> >
> > But my board reset automatically. Could you tell me how to do with this?

This doesn't work.  See the explanation in the FAQ:
http://www.denx.de/wiki/view/DULG/CanUBootBeConfiguredSuchThatItCanBeStartedInRAM

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
If it has syntax, it isn't user friendly.