My apologies, I left soon after this and apparently forgot all about it!
Looks pretty tricky though, I can't see any hints of a header (other than the second byte is always 0x88) or a recognisable image format. I'm also seeing a mixture of odd and even file sizes, which is awfully suspicious (I would expect them to be consistently odd or even). I'd guess that it's compressed, so I'll see if I can do anything about that.
EDIT: I tried all 500 algorithms that QuickBMS supports (there's a handy script for this), none of them decompresses to anything helpful.
Looks pretty tricky though, I can't see any hints of a header (other than the second byte is always 0x88) or a recognisable image format. I'm also seeing a mixture of odd and even file sizes, which is awfully suspicious (I would expect them to be consistently odd or even). I'd guess that it's compressed, so I'll see if I can do anything about that.
EDIT: I tried all 500 algorithms that QuickBMS supports (there's a handy script for this), none of them decompresses to anything helpful.