Update in apps, not from market

Question

I have installed mySample.apk on device, and i download updates for app from MY server then install( replace ) appk, but android SAY:

" this package already installed! "

I know that in applications the same keys and versions and certificate , but change them does not work, how do this in eclipse?

Answer 1

Have you tried to change the android:versionCode="1" on your AndroidManifest to a new version? if not Package manager will not know if it's newer that the previously installed.