629369 - Can't install older Fennec 4 beta builds - 'no signatures that match those in shared user org.mozilla.sharedID'

Status: VERIFIED FIXED

(Firefox for Android Graveyard :: General, defect, P5)

Description

[Aaron Train [:aaronmt]]

After installing the latest nightly build 01/27, uninstalling it and installing and attempting to install an earlier Fennec 4 beta build (beta 1 or 2) results in 

"Application is not installed"

Log: Package org.mozilla.fennec has no signatures that match those in shared user org.mozilla.sharedID; ignoring!

D/PackageManager(   85): Scanning package org.mozilla.fennec
D/PackageManager(   85): Shared UserID org.mozilla.sharedID (uid=10057): packages=[]
E/PackageManager(   85): Package org.mozilla.fennec has no signatures that match those in shared user org.mozilla.sharedID; ignoring!
W/PackageManager(   85): Package couldn't be installed in /data/app/org.mozilla.fennec-1.apk

Attempted to install 4.0b1
http://ftp.mozilla.org/pub/mozilla.org/mobile/releases/4.0b1-real/

and 

4.0b2
http://ftp.mozilla.org/pub/mozilla.org/mobile/releases/4.0b2/android-r7/en-US/

There seems to be some kind of signature corruption

Comment 1

[Aaron Train [:aaronmt]]

How can I clean out remnants of previous installs? I dont see any other mozilla packages on my device.

Comment 2

[Matt Brubeck (:mbrubeck)]

One possible theory: As of the 1/21 nightly build, our nightly sharedUserId changed from "org.mozilla.sharedID" to "org.mozilla.fennec.sharedID".

If you installed a nightly build before 1/21, then upgraded to one after 1/21, then maybe it registered the new sharedID without unregistering the old one.  Then, if you uninstalled the nightly build, it might have unregistered only the new sharedID, still leaving the old one.

If this is true, then installing and uninstalling a pre-1/21 nightly build might clear up the problem.

Comment 3

[Aaron Train [:aaronmt]]

That was it. I installed an example 01/19 build, uninstalled it, and then  successfully installed an older beta (beta2 in this case).