Restoring Prime to New Condition

[clintster442]

I am selling my two Asus Transformer Primes and would like to know the best way to restore them back to 'Like New' condition. I have unlocked, rooted, and flashed several different ROMs on each of them (one of them currently has Virtuoso and the other is running CM9). I know I cannot 're-lock' the bootloader but other than that, what is the best way to restore everything?

I have ViperMod to unroot them but I cannot seem to locate a a stock ICS ROM. Even better would be the last stock Gingerbread ROM so that I can flash to that and then OTA to the newest ICS update.

Anything else I need to do? I figure I would need to clear the caches and wipe in CWM...

Anything else I am forgetting?

 

[ylexot]

Here's the stock ROM:
[ROM]Asus stock .28 for Unlocked devices - xda-developers

You do NOT want to put Honeycomb (not Gingerbread) on and take an OTA to ICS. Once you are unlocked, forget about OTA.