Go to rebug.me Get the download link for 3.55.4 Custom firmware. Or better yet. Everything you need will be here >
You must login or register to view this content. Anyway. Download 3.55.4 Rebug install it into your Ps3. Then Download rebug toolbox via "Install package files on your ps3" Enable QA Flag it's the top option on the far right! Then download 4.21 Rebug Install that into your ps3. Then install Rebug Toolbox update package. Should be spoofed to 4.41 and go into rebug toolbox, Switch your mode to Rebug Then debug. Should be able to sign in fine. Either way everything you need should be in that link i gave you. Mods close this or move to questions

When you see it