Thanks you guys for trying to help,
i reformat the thumb drive and copy the files from step 1 to it, insert it to the right usb in the ps3 and power on, i waited 10 minutes or more but the ps3 does not shut down, the power led is flashing but nothing happends, i power it off and insert the thumb to the pc and in the log file i see:
"manufacturing updating start
PackageName = /dev_usb000/PS3UPDAT.PUP
settle polling interval success
vflash is enabled...
creating system regions...
get_device_info() device_id = 0x101000000000007, failure = -2147418110
manufacturing updating FAILURE(0x8002f0e0)
Total Elapsed time = 31922 msec"
What does it means?