App: Updater
At: 3/26/2013 3:13:35 PM (UTC)
OS: Windows XP Service Pack 3
Processor: Pentium Pro or Pentium II, RAM: 1048575 KB
IOU_UTILITIES.CPP-203-2.8

App: Updater
At: 3/26/2013 3:20:09 PM (UTC)
OS: Windows XP Service Pack 3
Processor: Pentium Pro or Pentium II, RAM: 1048575 KB
IOU_UTILITIES.CPP-203-2.8

App: Updater
At: 3/26/2013 3:23:54 PM (UTC)
OS: Windows XP Service Pack 3
Processor: Pentium Pro or Pentium II, RAM: 1048575 KB
IOU_UTILITIES.CPP-203-2.8

App: Updater
At: 3/26/2013 3:30:18 PM (UTC)
OS: Windows XP Service Pack 3
Processor: Pentium Pro or Pentium II, RAM: 1048575 KB
IOU_UTILITIES.CPP-203-2.8

As you may see from the log above - the process even started crashes almost immediately.
Should I downgrade the unit to 3790 FW and to start from this poin or it will be useless?