If your bulb does not match the pictures below, check if you have the newer v3 version of the bulb.
As of October 2020,
tuya-convert no longer works on this bulb due to a manufacturer firmware update.
Opened up the bulb to see if serial flashing was an option, but could not solder wires without destroying the fixture.
If you find a way to serial flash without removing the PCB board, please update this page.
Note there are two diffusers. The outer one should pop off after a few rotations, but the inner one may be glued on. A flat-head screwdriver will help remove the inner one.