Thx for answer!
My ouya is bricked it only comes to the ouya"!" screen, and the only option to even get the computer to recognize the ouya is "sideload through ADB" option after bringing upp the menu through the alt+sysreq+i hack. and trying to sideload the latest ota firmware just lets me adb it over and after scanning the file it says cancelled. any thoughts?
i also have the same problem, My OUYA is also bricked after messing with the build.prop yesterday and all i get is a black scree when i start the OUYA, nothing boots or loads, if i do the alt+sysreq+i combination it gets me to the "stock OUYA recovery" where i can scroll down to "sideload through ADB" to get my pc to recognize the OUYA and when i enter the command "adb devices" it shows my device# xxxxxxxxx Host

, and i don't know what to do here, i feel like a noob right now

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Never Mind, i got the OUYA un-bricked and it's runing again... thank god

i was able to get the sideload to work and and update installed, when i was adb'ing my pc saw my console but as a HOST not as SIDELOAD, so once i got my PC to see my OUYA as SIDELOAD and not HOST the sideloaded update went threw and installed no problem...