via http://psp.dashhacks.com/2012/04/17/...me-timemachine

Dev neur0n has released an update for a somewhat forgotten PSP app by the name of TimeMachine that will let you run 6.60ME on an older custom firmware with out installing it to your PSP internal Flash directories. I know most of you don't remember TimeMachine so lets explain it a little bit, TimeMachine was built back in the days of Dark_Alex when the scene was exploding. It allowed you to run custom firmware via your Memeoy card rather than the flash on your PSP so you could freely change your custom firmware at will. Have a read of what DAX wrote about it below.


The Timemachine is a program to load previous firmwares and custom firmwares from memory stick
using pandora. Like devhook, but working through pandora and custom ipl’s, it would work even if the
flash and nand ipl of the machine is destroyed.
The timemachine is useful to run software that is not supported anymore, and also as a way of
booting psp’s even if the internal firmware is destroyed. It can also be useful for developers
to test their homebrew in different firmwares.

Kinda cool right well now thanks to neur0n we have cutom firmware 6.60ME to run on it. Everyone say thank you and follow the read me and remember to rename the 6.60 OFW to 660.pbp and put it in the root of the memory stick.

http://www.sendspace.com/file/8yyb4r