I've had a YLDP005 for some months now that works great with this package.

Today I received two YLDP06YL. set_rgb and set_ct_abx work fine, but when I send the same start_cf command to all three, the YLDP005 does what it always did, but the two new bulbs will return an error:

yeelight.start_cf(0,1,[[333,1,0,1],[333,1,255,100]])
> {"id":*, "error":{"code":-5000,"message":"general error"}}

First I thought that maybe that model doesn't support color flows, but they do work from the Yeelight app.

Any idea? All three bulbs are on their latest firmware:
YLDP005 (Model: yeelink.light.colorb): firmware 2.0.8_0010
YLDP06YL (Model: yeelink.light.color1): firmware 1.4.2_0076