I tried to flash TWRP (I have stock recovery) and erase and format cache through fastboot, but both gave me this error:įAILED (remote: 'Can not mount the necessary partition') When you do a factory reset, it works fine to format /data, but when it gets to /cache, it gives an error and stops. I can get into recovery, but I can't do anything there because everything gives this error:Į:failed to mount /cache (Invalid argument)Įvery time I try to clear the cache, factory reset the phone, mount /system, flash a ROM from an SD card, or use ADB sideload, I get the same error. When it gets to the logo and the circle that says 'loading,' it just stays there forever. Then, when I charged it and tried to turn it on again, it wouldn't work. A few days ago, my Asus Zenfone 2 ran out of battery and turned off.