I don't have these carts :/
I've already backed up SysNAND (5.1), I hope Roxas will fix that soon
Maybe I have a wrong slot0x25keyx.bin file?
if you can access the rxTools menu, but can't boot into emunand, then you got the wrong version.
is your emunand version lower then 7? then just delete the key.bin from your SD card, you don't need it for now.
If this doesn't work then i suggest you do this:
Ok, this is what you do,I see...
I can't downgrade because the game I play needs 5.1 and my little brother plays it too and I think that it would be difficult to go to Web Navigator etc for him
use gateway launcher to create emunand.
take out the SD card and format sysnand. (your saves will be available on your emunand).
Put all the files of your SD card on your pc.
Downgrade using gateway.
put the rxTools.dat on your SD card and all the files that you copy'd to your pc before.
boot into rxTools.dat through the browser exploit, and play your games in emunand which you can now also update to 9.6
BAMMMM you got it!