Manually installing an updated APK fails with “signatures do not match the previously installed version”

Question

I\'ve built a silly app to share among a few friends. No need to put it up on the app-store.

I built the first apk (signed), uploaded it to a web-server

Answer 1

Yes It is possible if somehow your old application is not removed 100% or its data is not removed.

Try:

adb uninstall "com.yourapp.yourapp"

If you don't know exactly what to put as replacement for "com.yourapp.yourapp", then you just open Android studio, Run your app while it is connected to a device and then look at Debug window.

It says:

 Waiting for device.
 Target device: samsung-sm_t531-xxxxxxxxx
 Uploading file
 local path: C:\Users\myapp\app\build\outputs\apk\myapp.apk
 remote path: /data/local/tmp/com.myapp.myapp
 Installing com.myapp.myapp
 DEVICE SHELL COMMAND: pm install -r "/data/local/tmp/com.myapp.myapp"
 pkg: /data/local/tmp/com.myapp.myapp
 Success

com.myapp.myapp in this case is the name of the package you must use to uninstall.