Time To Upgrade My 1.50?

So I've got a 1.50, and I love it. It does everything I need...except properly access 8gb memory sticks (1.50 does not recognize FAT32 cards; FAT16 does not work on cards larger than 4gb). So now it seems I must upgrade my PSP just so I can use my new hardware. But...I'm not sure how to go about it. Since I've ignored all of the firmware updates, I'm at a loss with where I should go. Essentially, I need a firmware that's going to let me access my 8gb card (when it's formatted for FAT32), while also allowing me to run all of my emulators (the only programs I run on my PSP). Can anyone point me in the right direction? :confused: