I have 2.60, and want to upgrade. But I need to upgrade to 2.71, downgrade to 1.5 first. In the guide for downgrading, there are steps for those who have a PSP TA-82 and TA-86 and steps for those who don't have these PSPs. I know that to see if my PSP is TA-82, I just have to open the UMD slot and see if I see red print on the right.
But what do I have to do to see if my PSP is TA-86?