Regarding the pins, here is a diagram, looking down at the hotshoe on the camera from above:
Flash Systems Evolution, Features and Operation
Note that on the flash itself, you cannot actually see the ground contact on its hotshoe by looking at it from the bottom. You can only see that by looking at the flash's hotshoe from the side. In any case, the pins for TTL and P-TTL are physically identical, only the usage differs.
I have a Zykkor TTL-only flash that fires as a manual flash on my K-5. So I would think you should always be able to fire a TTL flash as manual on a P-TTL body. Maybe the firmware was a bad implementation of P-TTL, which somehow makes the K-5 kinda sorta half recognize the unit as a P-TTL unit, whereas the K-01 doesn't see the flash at all, hence firing it in full manual.
Anyhow, you should be able to get this to work by isolating all the auxillary pins, leaving only the main trigger pin (and the hidden ground pin) exposed. A straight cable like this
Paramount PMHSHSFM10 Sync Cord - Hot Male Foot to 17HSHSFM10 B&H
That one is expensive but you should be able to find one much cheaper, I'm thinking like 10 bucks.