i boght an old PS3 slim with rogero 3.55 CFW ( i think that it was downgraded to 3.55 ) .
i have puten my ps3 in recovery mode then i have updated it with the 3.55 OFW , the ps3 complete the downloading of the firmware then when it reboot the PS3 shudwon after 6 secoond .
when i restart it again it start for 6 second then it shutdown without any message on the screen and without any bip .
please note that i can't enter to the recovery mode again and i don't have any dump from it .

is there any fix of methode to fix it .
i have a second PS3 with an ofw 4.21 can i pick up a dump to try to recover it ?
is there any specialist on europe or any web site that fix such issue .