how to root Asus Transformer TF300T

since this info was on page 89 of this thread
i'd thought i'd start a new thread where more people might see it.

if your TF300 still has build you can root it using SparkyRoot

this worked like a charm on my TF300.

now that asus has posted the .17 firmware
.26 can be downgraded to .17 then rooted. using method 2 from here

or the one click method from here

you need the BLOB file from the .17 firmware zip from the asus support site.
after your rooted download Voodoo OTA RootKeeper from the market to backup root.
with that backup you can update to .26 OTA and restore root. if you apply the update from the zip you loose root.