Is there a system dump of the Bionic out yet? Or see if someone pulling it from their phone will help yours.
I'm tried to have someone else back it up on Titanium Backup but it did not work, I need to find out how to install system apps because I have the apk file for it backed up I just need to install it.
if you have the APK file... can't you just use a file explorer to 'launch' the APK (by clicking on the .apk file) which should trigger the install prompt?