Every dump has sam block mismatched?

[Xyrts]

I dumped a 256mb jasper several times with nand-x and every time I get
error 250 598
error 218 59a
I know error 250 is a bad block that can just be remapped but I cant find any information about error 218. I can only hypothesize that its a bad block that hasn't been mapped yet as it's the next block? When comparing the nand dumps 59a comes up as a mismatched block every time. I checked all of my soldering points and everything looks fine.
Any ideas?
thanks

 

[manwithoutname]

I my self have no idea what error 218 stands for, but all I'd say if you get mismatching blocks then defenitly dump ain't good.

I personally until I get 0 mismatching blocks would never attempt to write anything onto the NAND.