HELP: Updating R4i SDHC firmware to 1.9b

Can someone please guide me through installing the 1.19b kernel on an R4i SDHC. I did it in what i think is the right way, but got the dreaded red "MENU?" error
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I think ive been DL'ing the wrong one, DLing 1.20b now, will post on the WarioWare forum if i can get it working.

Your card most likely needs formating, simply create a backup of your card, format using the Panasonic Formatter, copy the new menu across and then copying your stuff such as games back on.

I backup and format every time.

perhaps your doing it wrong ive already done that new firmware it was quite easy as i am new to this sort of thing