(adsbygoogle = window.adsbygoogle || []).push({}); plz someone help me, ive tried all day to fix it and i didn't get nothing. i tried to downgrade my ps3 from Ferrox 4.70 to rebug 4.65.i folowed this tut :
Install 9.99 Downgrader Rogero
Install TWICE 3.55 v3.7 Rogero to dehash
Enable QA Flag (it's important, not for downgrade but it is useful)
Install 3.55 OFW and restore file system/rebuild database (Do this step if you want to do a clean installation, anyway you can skip it)
Install the cfw you want

when i installed 999 rogero downgrader, i tried to install 3.55 v3.7 rogero, but then, it say that i need a firmware 9.99 or later on the recovery mode, and when i try to update it the normal way, it put me this error:8002F169

if someone can help me, pm me here or add me on skype: mouji123456789
thank you

You need to remove any discs in the console and delete all game data.

Also Enable QA flag

Check to see if your files are correct.

And use 3.55 downgrader again if that dont work maybe you didnt de hash