OTA update on LS-5P (controller for non addressable strips)

Hi, I've been trying to update the LS-5P https://www.athom.tech/blank-1/wled-rgbw-light-strip-controller from the 0.13.0-b6 version of WLED to something more recent,

in the wled interface it lists it as an 8266 2_7_4_7 (1) So I've tried OTA update with both the latest WLED_0.14.0-b1_ESP8266.bin and the older WLED_0.13.3_ESP8266.bin

But i just get a 'Failed updating firmware' does anyone know how to update it or if this is even the right firmware?