It says... This will get you onto PSN, but beware "Be aware that PS3 Firmware 4.46 uses a new CERT and this spoofer still has the old cert. As it is not risky enough going online with CFW, loading invalid data as a spoof is an even higher ban risk!"
If you did not understand, it means it uses an old cert possibly from 4.41. So you probably poke out like a sore thumb to sony going online ATM.
Use "Debug for HDD Exchange Utility" to clone/transfer your current files to your new HDD without loosing any of your saves and files. But your new hard drive needs to be inserted to a USB to SATA adapter to transfer the data to your new HDD.
new spoof from sgk with new cert (ps3teamsgk.wordpress.com/2013/06/27/spoof-4-46-psn-pour-cfw-4-41-by-teamsgk/)
Spoof 4.46 psn + v2 certificate for CFW 4.41 4.40 4.31 (4.30 4.21 Rebug) By TeamSGK
hi to all my voilla spoofv2 4.46 with access psn and adding the new certificate for the psn connection and avoids a minimum ban! pkg and is almost all 4.41.05 cfw cfw 4.41 Rebug and Rogero and also Rebug cfw 4.30 4.21 + 4.31 and the 4.40 cfw! voilla good games at all and principally made good lines
INFO on Rebug cfw and SGK return to normal mode before installing the pkg