In this tutorial i will explain how to get into FSM on your PS3 it's actually really easy.
*Warning- If you plan to go into FSM please...please..please back up your files just in case you don't want to exit FSM only to find all your data gone.

1.If you are not on 3.55 CFW i.e. your on Rogero 4.46 or Habib 4.46 you need to downgrade with the 999 Downgrader. If you do not know how to do this follow my guide here http://gbatemp.net/threads/how-to-downgrade-back-to-3-55-no-flasher-needed-cfw-only.354070/

2.Once your on 3.55 YOU NEED TO BACKUP YOUR DATA FIRST i cannot stress this enough

3.Now that you have everything backed up go ahead and google "FactoryServiceModeToolv0.2" and download that.

4.You should get a .PKG file, go ahead and install it on your PS3

5.Before procedding make sure that everything is backed up

6.Now go ahead and run the program

7.Your PS3 will restart and you will be in FSM

8.When you want to get out of FSM just download this http://www.mediafire.com/download/ish8ua60al44sw8/Lv2diag.self and put the file on the root of your usb drive and plug it in the right slot of your ps3 and then restart the ps3 and it will exit fsm

9.Hope you enjoyed this tutorial happy PS3 Hacking

 

[HideoKojima]

How come no one commented on this. Thanks for the info. I don't want to install FSM but I wanted to know what is it so that I avoid using it since it can break the console with HEN.

 

[GATWYAY3.2]

same here no idea what it was so how could i avoid it

 

[HideoKojima]

same here no idea what it was so how could i avoid it

Seems something you have to install so as long as you don't install it then you should be good.

 

[felixthecat1970]

old method, new method use CFW 4.88 evilnat and use network tab "tools/advanced" and read note warning; also never try on PS3 HEN or you pas3 will be stuck in factory mode.

 

[godreborn]

yeah, don't install an update in factory service mode either.