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Hi,
i recently received my Z-uno....right now it seems to not work at all.....plugged in the LEDs start blinking, but as soon as I try to flash the bootloader or upload new software it crashes already at compiling state.....i have 1.6.5 which i hate as it is outdated but seems to be the only supported version. nevertheless i see the COM5 (Z-uno) device in settings...aldo tried the WinDriver on the webiste, does not change anything......

The error message for Bootloader Flashign is: Error while burning bootloader can be seen below, any ideas?

java.lang.NullPointerException
at cc.arduino.packages.uploaders.SerialUploader.burnBootloader(SerialUploader.java:306)
at processing.app.Editor$59.run(Editor.java:2578)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

Sure you have chosen Z-Uno board and Z-Uno programmer? Never seen such an error

Thank you PoltoS. I just came here with the exact same issue, and i indeed forgot to set the Z-Uno programmer.
Works fine now

sorry....my mistake. I did choose the right board already....which i always do - but was not aware that there is another programmer to be selected...normally wiht ESP or Arduino i never change from mkII

one more question.....how do i get new firmware? and how to upload?

Regards Norbert

there is burn bootloader button. Arduino IDE will notify you (during sketch load once the version of the s/w does not match the version in Z-Uno.