Lenovo SE-141DC CCT Bulb (ZA7G0000WW)
USB to Serial
Open bulb (I just put seam of bulb on the edge of furniture and pushed down on both sides of the bulb to pop it open). Remove LED board (has a connector, doesn’t require un-soldering). Connect VCC/GND/TX/RX on module to programmer. Connect GPIO0 on module to GND with 9kohm resistor when applying power to module (to enter programming mode).