My batch 3 S2 is plagued with problems.

1. Impossible to reboot/shutdown(Hot or cold) without having do SD recovery. (SD recovery never works first time around)
2. 1 blade intermittently gets XXX00XX ---XX--00 in ASIC status
3. 1 blade permanently gets XXX00XX ASIC Status
4. 1 blade after 2 days stops hashing and temperature shows its about 20 degrees cooler.

Asked for repeated RMA but support keeps on ignoring requests or offers troubleshooting solutions that are no longer relevant.  

Pretty pitiful really, I don't how this unit could have passed their Quality Control process.