I have tried updating my 8580 and it just keeps going in a loop of saying it is applying the Firmware update - printing reports and then starting it again. Not sure if it is best to just unplug as it warns you not to interrupt it. Very frustrating :-(
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I updated my ColorQube 8580dn from Factory Original (System 1.3.8.P / OS 10.52 / PS 4.5.0 / Eng 26.P22.214.171.124 / Net 44.10.07.08.2014) to the latest available (System 1.3.8.P / OS 10.80 / PS 4.19.0 / Eng 26.P126.96.36.199 / Net 44.38.01.12.2015). I uploaded a local driver file (ColorQube8580_system_sw_PS_4.19.0.ps) copy. The printer successfully applied the update and then the control panel displayed the following:
whereupon it hung at that display for over fifteen minutes. After I had concluded that it was hung, I searched for related information on Xerox online support as well as Googled for outside references. I found nothing.
Referencing the User Guide, I found information for "Restarting the printer" on pages 128-129. After determining that the control panel was unresponsive, I opted to use the Power Switch. The printer powered off without displaying the option for me to select Standard Shutdown.
I gave it a couple of minutes before I powered it back on. Fortunately, the printer powered up without issue. And, my firmware update effort was successful, albeit the process was slightly different than documented.