According to the instruction on the Firmware Updater window, select Menu -> Setup Subpage 2 -> USB Connection on the camera, and check if Mass Storage is selected.Double-click the file you downloaded to start up the Firmware Updater.Close all currently running programs on your computer.Click the tile from the Start screen and find the downloaded file in the folder by using Explorer. Under the initial settings of Internet Explorer, the update file will be saved in the folder. After reading the disclaimer, click the button below.Make sure that you are logged on as a user with administrative rights.In case the computer would go into sleeping mode and the update would be interrupted, redo the complete update process from the start. The firmware update takes approximately 15 minutes, therefore prevent your computer from going into sleeping mode.When using an A-mount lens with the LA-EA2/LA-EA4 Mount Adaptor (sold separately) and setting to use the function, the registered value is reset.Remove the memory card from the camera beforehand.Do not remove the battery or AC adapter during the update otherwise, the camera may become inoperable due to the sudden power shutdown.When performing the firmware update, please use a fully charged rechargeable battery pack NP-FW50 or the AC adapter AC-PW20 (sold separately).I was in full on panic mode trying to figure out what just happened. I don't know if this will help anyone but I'm just sharing my almost bricked a6000 experience and what I did to bring it back to life. Replace the a6000 battery but the camera was still dead only the little red light under the bottom was on, I turned on back the camera relaunch the update software do the required and then plug in the USB cable to it, to my surprise the update restarted while the camera screen was still black which was always the case, I watched nervously to the end until I was prompted to hit the finish button, the screen lit up and I hit the finish button plugged out the USB cable and my a6000 was updated to firmware: 1.20, minutes after I went on a Japanese link which took me to another update 1.21 which I did with no problems and my a6000 is working perfectly now on 1.21. I close the update software turned off my iMac running 10.9.5 and restart. My only solution left was to call Sony to inform them that my a6000 was bricked but consistence prevailed and I tried some more stuff. I tried to turn it off but nothing was happening just a red light was on at the bottom of the camera I did the battery removal thing among everything else but the camera was still dead. To my surprise the strangest thing happened, in the middle of the update the process was aborted leaving me with a non functional a6000. Today I tried to perform update 1.20 on my a6000 followed all the instructions which I was already familiar with,

Ilce 6000 firmware update