Well, I purchased a new PSP Slim the other day, only to have a stuck pixel magically appear two days later...so I exchanged it. The Target I purchased from received a new batch, and of course the exchanged model is the infamous TA-085 v2 motherboard revision (Daxter pack).
I knew it would be right off the bat after opening it, as the box containing the power supply etc is littered with ads for accessories for the PSP. The older revisions of the Daxter pack did not have this.
Anyway, I do have a Pandora battery, so backing up the nand and modding it to 3.90 m33-3 was not an issue at all of course. I did however notice some other changes with the unit. The analog nub sits a millimeter or two HIGHER than the previous model. I noticed this almost immediately as the nub just felt so much smoother and somewhat more accurate.
The screen seems to be different as well. I play NJ's excellent Neo-Geo emulator quite a bit, and noticed that the ghosting that I experienced previously with the Slim has almost vanished. It is still there, but drastically reduced.
I am betting that the mobo is not the only revision on the device. I think Sony may have addressed other issues in this update. Can anyone else with this model confirm (who also have an older model to compare)? At least it is still moddable :)
Ohh, and keeping with the thread title, the downside is blatantly obvious: cannot make a pandora battery! :)