2. There are many skills to identify the renovation, such as looking at the screen, whether there are scratches or dust on the fuselage, but personally, the simplest thing is to look at the metal ring on the UMD warehouse cover. This metal ring is extremely easy to wear (I use a toothpick to cross it), as long as it is used, it is impossible to have no traces.

3. Memory stick? It's hard to say. It's best to test the transmission speed on site. In fact, there is no essential difference between the assembled and the original, as long as the results of the field test are acceptable to you.

4. For other key points, you'd better find someone to take it to a reputable store. Pay attention to whether the numbers on the bottom of the machine are consistent with those on the box. Also, let the BOSS demote you on the spot. The price of the machine itself should not exceed 1500, plus a full set of accessories (startup disk, film, bag, etc.) of about 2000. Just pay attention to the price

Oh, the key problem is that the buttons of Sony PSP are too close to the screen in the early days, which is easy to cause failure. Now that PSP has been solved, you can rest assured.

High-speed memory stick, that is, it says high speed ... measure the speed of the memory stick. I talked about the third point (LS nonsense, now 2G still needs 800? 4G is only 600)

One more thing, don't listen to others' nonsense. The government stopped producing luxury PSP a long time ago. Now JS has added its own accessories to the so-called luxury PSP.