[Upgrading, Modifying and Unlocking] phate:
I ran the latest 1.8b and this is what I got:

Polaroid AIO v1.8b - BETA - by DH4 http://facebook.com/wayne.hartmann
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Thank you for participating in this BETA TEST. If you have used any version of
Polaroid AIO be sure to choose Remove Google Apps and Framework FIRST!
Otherwise you may have major issues with the play store.
Please report your results in the forum. Enjoy your new tablet experiance.
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Polaroid AIO will root, un-root, and install Google Applications and Framework
on your Polaroid Tablet. Tested on PTAB8000, but should work on others.
This script is provided with absolutly no warranty, use at your own risk!
Special Thanks to Bin4ry for root method.
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Enable "USB Debuging" and "Stay Awake" in Settings --> Developer Options

Waiting for device to become ready... [Device Ready]
Found: MID PTAB8000 running Android 4.0.3 [Framework Supported]
Checking if device is rooted... [Device Un-Rooted]

Pushing Busybox... [Done]
Pushing su Binary... [Done]
Pushing Superuser.apk... [Done]
Pushing Busybox... [Done]
Fixing Busybox permissions... [Done]
Running Exploit... [Done]
Your device will now reboot... [Done]
Fixing file locations... [Done]
Fixing file permissions... [Done]
Your device will now reboot... [Done]

Checking if device is rooted... [Device Rooted]

Mounting File System as Read/Write... [Done]
Pushing Google Backup Transport... [Done]
Pushing Google Calendar Sync Adapter... [Done]
Pushing Google Contacts Sync Adapter... [Done]
Pushing Google Feedback... [Done]
Pushing Google Login Service... [Done]
Pushing Google Partner Setup... [Done]
Pushing Google Quick Searchbox... [Done]
Pushing Google Services Framework... [Done]
Pushing Google TTS... [Done]
Pushing Google Market Updater... [Done]
Pushing Google Media Uploader... [Done]
Pushing Network Location... [Done]
Pushing One Time Initializer... [Done]
Pushing Google Play Store... [Done]
Pushing Setup Wizard... [Done]
Pushing Google Talk... [Done]
Pushing Voice Search... [Done]
Pushing libfilterpack_facedetect.so... [Done]
Pushing libflint_engine_jni_api.so... [Done]
Pushing libfrsdk.so... [Done]
Pushing libgcomm_jni.so... [Done]
Pushing libpicowrapper.so... [Done]
Pushing libspeexwrapper.so... [Done]
Pushing libvideochat_jni.so... [Done]
Pushing libvideochat_stabilize.so... [Done]
Pushing libvoicesearch.so... [Done]
Pushing Google Maps Framework... [Done]
Pushing Media Effects Framework... [Done]
Pushing DRM Framework... [Done]
Pushing Market Unlocker... [Done]
Starting Market Unlocker... [Done]

Look at your device and Switch Enable Unlocker to the ON position.
Allow Superuser Permissions, then continue when complete.

Did you enable Market Unlocker? [press y then enter]: y

Fixing Google Play Framework... [Running]'
grep' is not recognized as an internal or external command,
operable program or batch file.
Fixing Google Play Framework... [Done]
Mounting File System as Read/Only... [Done]
Your device will now reboot... [Done]

If the Play Store still has a limited amount of apps, please try running a fact
ory reset.

I hope you have enjoyed using this software. If you have any questions or
comments feel free to contact me on facebook. -Wayne

Press any key to continue . . .

Still looks like the same limited Play Store as 1.6b.

Perhaps the 'grep' is not recognized as an internal or external command is a problem.