SS 3300 XM Christmas tree syndrome then went numb, help

[sbofh]

I have a Superstack 3 3300 XM (3c16985b) which failed overnight with all leds lit. After poweroff/on switch didn't initialize, but instead have all eight unit leds lit and power led is blinking green. Console don't work either.
I tried to update the firmware with suu and process is going, ahem well, switch is accepting new firmware and suu is reporting that update went ok, but again, after update unit leds are lit and power led is blinking green ;(
I tried to dig something on knowledgebase but I can't find anything useful except something about failed fiber module (which I don't have and that if update with suu didn't cure the switch then it must be returned to 3com.
Is there any workaround to bring switch back to life? I already have one failed SS3300 (this one refused to work in rack, and after while failed) returned to Brussels about three of four months ago and I didn't get new/repaired yet... I seriously consider firmware upgrade with sledgehammer and if that fail returning switch to dumpster. Any suggestions?

 

[Earkus]

Have you tried using telnet and under the menu "system" use "initialize" to reset the unit to factory defaults then reconfigure? I am recalling info for a 3300 TM so it may not be the same for a XM.