Okay, I don't want to stir up any negative feelings with this thread, I just have an idea, and I want to know if it is a possibility or not.

I am relatively new to the PSP homebrew / FW / hacking scene. (I would say, a couple weeks or so when I actaully started using homebrew on my 2.50). Okay, so I have 2 PSPs, one is a 2.50 with the TA-082 mobo and the other is a 2.80 with a normal mobo. I want to downgrade that to 2.5, and after reviewing a lot of information, I have an idea. Here it is (and LOTs of feedback to its possibility would be appreciated!)

Well, first I tried getting the PSP to see an update and try to run it. Using PBP unpacker, I changed the update to look from 2.5 to 3.5, and the PSP started running it. It obveously went back to the main dashboard and said it cant run it. Okay, that was expected. Then I tried using the 2.81 with the 2.5 update information to see if I can trick it into working. Again, failed. I have one final glimpse of desperation to finally get back to 2.5 on my PSP.

If I run the 2.81 update it will take me to the "press X to start update" screen. If I remove the memory stick, it returns to the main dashboard with the "Update failed" error. I have the idea that if I try to modify the update file, while still being at the update screen, I want to convince it that it is updating to 2.81, but instead use the data from the 2.5 update file that I want to put into the file using the PBP unpacker program.

So, if this makes any sence what so ever, then here is a couple questions:

1: Is it possible to hot-swap the memory card, or at least not let the PSP know its memory card was removed and then reinstalled?
2: Let's say I got the memory card out, and was able to update the update file, if I replaced the files that contained the 2.5 firmware, will it still accept it thinking its the 2.81, or will it crash?
3: Would the Datel hard drive be able to be removed and then reinstalled w/o breaking the adapter? (I am talking about the hard drive removed from the adapter unit itself, not the adapter from the PSP)

I just don't know. I tried looking around but couldn't seem to find any information regarding possibility to hot swap, or if the hard drive can be safely detached from a "hot" adapter.