Sry to bring this up again (got asked b4) Zoom for better vision
look at my keys XD but still... I don't find anything wrong with my PSP and still can update smoothly without error.
But can Chilly explain my keys problem? I mean each of the error keys indicate which part in the PSP. Thanks XD
EDITED: This is my PSP1002 as mentioned in my Sig there
That PSP was originally soft-downgraded. Then someone must have "fixed" only keys 4, 5, and 6. That left the other keys in the original soft-downed state.
You should probably use the latest DC to rebuild your keys. If you want to do it by hand, I can help, but it'll be more of a pain. Basically, to repair by hand you need to dump the key with IdStorage Manager, rename some of the files, make 0x43 by hand (or use someone else's copy as it's universal), and then use IDSM to write them back.