--- tridge@samba.org wrote:
At powerup it says "S/N Unknown", then 

  could not activate this XO
  Serial number: SHF00000000

When I try the activative procedure, I instead get:

 No serial number in mfg data
 No serial number
 User power button to power off

plus a sad face icon.

Any suggestions? 

Under the battery cover it says "b2-7" and gives a serial number of
SHF70600215 

Cheers, Tridge
--- end of quote ---

Unfortunately, it sounds like you have a bricked machine.

