Hello! Bought a used droid 6 months ago. Every week or so I get an icon in the toolbar telling me that there is a system update available. When I click to install, it aborts. The messages that I get are as follows: -- Install from sdcard... Finding update package... Opening update package... Verifying update package... E:failed to open /sdcard/update.zip (No such file or directory) E:signature verification failed Installation aborted. I don't know how to check to see if the file is actually there. If it is not, why do I keep seeing the icon that says it has been downloaded and is available for installation? Can anybody help?