Hi I'm also having Ta-082 PSP but I do not have much problem playing ISOs . Not to worry too much just simply use Hen C or Hen D .
I have yet to update mine to Hen D because I dun know whether it is easier to use or not in Hend .
But for Hen C , i'll get 100% when everytime I try to emulate by.
My technics as follows whenever the PSP hang.
** Note : This is after the updating .. please refer how to update the henc or hend instructions carefully.
1. Take out the battery
2. Put back the battery
3. Open the UMD and switch on
4. Go to photo and run henc photo
5. Wait till it restart automatically.
6. Now close the UMD and run devhook enabler.
This way it's 100% can run the ISO.
By the way anyone tried to play using Devhook 0.51 ? will it work ?
I'm not too sure whether I can post another forums in this but here is the site which helps you upgrade your HEND.
I'm going to update them soon and let you know whether it is more stable than HENC or not.
http://forums.afterdawn.com/thread_view.cfm/399310Moderator : Please let me know if I've broke the golden rules and I'll remove the link. Thanks