I don't think Sony would be able to do that, but, let's say they made an app that changed an official firmware's xmb, this would essentially be homebrew that alters flash0, homebrew (as far as we know) has no way of running on official firmware.
If Sony released an app like that, wouldn't the dev teams for PSP jump all over it to try and find out how Sony got homebrew to work on any version PSP, especially one that altered flash0?
If they found out, they would use this to be able to make homebrew downgraders for any firmware, correct me if i'm wrong?
This would mean far too much of a risk for Sony, but if they could get round this problem, then yes, it's a good idea.
PSP, all the way from 1.00 to 5.50 GEN D2 - DS Lite w/ M3DS Real (M3 Sakura v1.34)
PS3 3.01 - iPod Touch 2G 16GB Jailbroken - Xbox 360 60GB - PC, Q6600, 3GB DDR2, GTX260 (216) 896MB
PSP, all the way from 1.00 to 5.50 GEN D2 - DS Lite w/ M3DS Real (M3 Sakura v1.34)
PS3 3.01 - iPod Touch 2G 16GB Jailbroken - Xbox 360 60GB - PC, Q6600, 3GB DDR2, GTX260 (216) 896MB
