Never mind guys.
I manually upgraded uboot to ver 3.4.27 and than installed linux distro using ESIA app without problems.
Thanks.

Hi there,
I tried  to use ESIA installer on xp machine to update my SheevaPlug and got some issues:
1.  Installation of Debian_Lenny to NAND flash stopped at stage "Loading installer image" with error "On-board installer exited".
2.  Uboot re-flashing failed with error: "OpenOCD failed to reflash your device. Process crashed".

Any comments on that. Thanks in advance.

Some technical details:
a. downloaded   ESIA ver 2.0.5 and Debian_Lenny  from http://sourceforge.net/projects/esia/files/
b. followed instructions from  document Esia_walkthrough.doc
c. have 2GB FAT32 USB stick for DOK
d. plug has uboot ver 3.4.16
e. tried to install Ubuntu904, same result as in #1