There are three methods of installation, please be sure to follow the instructions carefully to avoid any unnecessary problems.
(1) Titanium Backup Method:
Step 1: Firstly, in Titanium Backup, make a back up of the “Maps” app.
Step 2: After the backup, now select Maps, wipe its data, and then completely uninstall it.
Step 3: Do as above for Street View – wipe data and uninstall.
Step 4: Then install maps 5.7.0-ownhere-testkeyresign.apk (link at the end).
Step 5: And finally, go to the Android market and reinstall Street View.
(2) Using the versatile command line tool Android Debug Bridge (adb):
Step 1: First uninstall Maps from /system/app
Step 2: adb remount
Step 3: adb push /maps5.7.0-ownhere.apk /system/app
(3) Alternatively, you can install the flashable .zip file using CWM Recovery.
Required Files (Remember you only require one of the following depending on your chosen installation method).

Files Needed to Download
maps5.7.0-ownhere.apk (6.96 MB)
maps5.7.0-ownhere-testkeyresign.apk (6.95 MB)
Flashable .zip (7.21 MB)