App patching 2

This might be a spoiler. In app patching 2 do I have to change the jnz to jz? Because it works, but the checksum is incorrect.

There are multiple ways that work, but only one of them will produce the correct md5 checksum needed to pass the challenge.

Forget trying jnz to jz or jne to je in this one.

Ok, thanks

After strepping through the apps code, I've used a NP on the C**L that XR's the *AX, but the resulting MD5 checksum it produces is not accepted as the answer, but I'm almost certain that this is the correct way to complete it.

Anyone got any ideas where I am going wrong here ?

Have a closer look at the C register man, before you N*P that call.

My bad. I thought I'd saved it to the app after doing that part, but I guess I hadn't. Another 60 points in the bag.:D