As stated by Pereb27........you must have been looking at something related to Waninkoko V1 CFW.
You should have no problems with Kmeaw (any version) or Waninkoko (V2).
I am glad I went with Kmeaw........mine would've bricked if I had been impatient.
As far as the Cobra dongle goes.......it really depends on what you want to accomplish.
If you are strictly looking to back up your game discs.........Kmeaw and multiMAN will suffice.
I would much rather go to my grave not needing my gun, than go there wishing I had it.