dex to cex without original dump

1- Since you are already on itskamel dex 3.55, install FactoryServiceModeV2.pkg
2- Copy rogero FW v3.4 and lv2diag.self to the root of a usb and connect it to the most right usb door on your PS3
3- Start FSM. it will beep and return to xmb. then start FSM again and let it do its job
4- After all done, PS3 will turn off, remove usb, delete files, but rename lv2diag_exit.self to lv2diag.self.
5- Connect again to ps3, and turn on PS3, it will turn on and off in 4/5 seconds.
6- Remove usb, and turn on PS3, it will now turn on normally, and you'll be on a partially DEX/CEX CFW ROGERO v3.4
7- Now install multiman 4.03, only on that works on it, and install eid_rkdumper.pkg
8- Start dumper, ps3 will beep and reboot.
9- Go to multiman, and get your file at dev_hdd0/tmp and copy it to a usb
10- Do what you need to convert your dex to cex nand, im still trying to do it, since Windows 8 dont let me do it.
11- Put itskamel 3.55 dex on usb, and go back to it, using system update on XMB.
12- Install 4.06 multiman on it, and flash it with your converted to CEX nand.
13- Exit to XMB, turn off on power button, and then turn on again on power button.
14- Update with any cex fw on system update, and voila, back on CEX.