From the included ReadMe File: Look ma, no Downgrade Dongle v0.2
In keeping with our Red Valentines theme this month... we release another red themed app. Tonight, in our second release we bring you a second handy app that continues our commitment to the removal or the need for ANY dongles. A simple app that should likely make it into everyone's PS3 tool set. An XMB application that places the PS3 into factory service mode. Now, You can now throw away that downgrade dongle! Also, as an added bonus we've included CEX and DEX versions of the pkg.
Psgrade was ported to all sorts of devices, even calculators ... none of those external devices are needed any longer! You may now re-purpose them!
When you run the app it will beep once and reboot if successful. Three beeps indicates...
68w ago - Last year a PS3Jig v1.00 PS3 Factory / Service Mode Jig dongle for Sony PSP was released by Brandon Wilson, and today I have made available a PS3Jig modification that attempts to support all PSP models followed by Test 4.0 for those interested in experimenting and sharing your results here.
119w ago - On this Super Bowl Sunday Brandon Wilson has released PS3Jig v1.0, which is a PS3 Factory / Service Mode Jig Dongle downgrader for the Sony PSP handheld.
He has confirmed the PS3 downgrader / Service Mode Jig PSP port can be used for <= FW3.55 homebrew and works on 1001 5.50 GEN-D CFW. For those interested, IndyColtsFan84 has also made a PS3Jig Downgrade Tutorial for PS3 Firmware 3.50 and 3.55.
To quote from his page: PS3Jig is a homebrew program for the PSP that emulates the official Sony "jig" stick for entering Factory/Service mode. All you need to do is attach a USB cable between your PS3 and PSP, run the program, and turn on your PS3, just like any other downgrade/service mode method.
AS OF THIS WRITING, THERE IS NO WAY TO EXIT FACTORY/SERVICE MODE ON PS3 FIRMWARE VERSION 3.56, SO DO NOT ATTEMPT TO USE THIS ON PS3 FIRMWARE VERSION 3.56 UNTIL YOU READ OTHERWISE ELSEWHERE!