But that would not change the situation much. Instead of having a unique, prototype image blatted by a stock, run-of-the-mill PR1.3, you will have a unique, prototype image blatted by a stock, run-of-the-mill PR1.2. If anything, the value would only decrease because it is an older image. I would leave it as it is.

Mind you, since the device is used anyway, the image does not really make such a big difference.