4.82 OFW to CFW 4.82 trouble

Hello all, newb here.
I have a Phat CECHB01
I followed PS3xploit tutorial, kind of.
I updated my system to OFW 4.82 once (not twice)

The flash NAND worked fine.
I do not see CFW 4.82 FERROX on this site
I did try to load 4.81 FERROX, but failed, error 8002F169 , data is corrupt.

So I'm trying to load OFW 4.82 a second time, but the system says no data is on the USB.

Where is 4.82 FERROX?
Should I be able to load OFW 4.82 a second time?