The iPhone HD, already considered to be one of the biggest leaks in history, just won’t stay down. This time around, while it’s not as exciting as a Redwood City bar, the speculated device has shown up in Vietnam. And thanks to a blog over in those parts, we get plenty of screenshots, and a few confirmations about what’s going on under the hood.

The folks over at Tinhte.com managed to put their prototype device through some rigorous situations. They plugged it into their computer, hoping that iTunes would launch and tell them all sorts of interesting stuff. Unfortunately, the program didn’t open automatically. When they pulled it up on their own (we hate clicking as much as they do, apparently), iTunes did recognize the prototype as an iPhone in recovery mode, so that’s good news. The bad news comes in the fact that they couldn’t do anything unless they updated iTunes, and obviously there’s nothing to officially update to, so their luck ran out.

They also tried to recognize it in OS X, and it managed to pull up a serial number: 002608C89DCA. Unfortunately, Apple’s support page doesn’t recognize the serial number (shocker, right?). And, finally, they tried to run the Spirit jailbreak, but that didn’t work, either. So, all roads lead to nowhere when it comes to this prototype. But, hey, at least we get a few more screenshots of the unofficial device. There’s also talk that the processor inside the iPhone HD is going to be the same as the iPad’s: the A4 processor. Which, if that’s the case, then the next iPhone is going to be incredibly fast. So, buckle up.