XC90 II Tail Lights Reprogramming to EU

[mortos]

Hello,
I've noticed that some companies offer to reprogram US/Canada tail lights so that they blink in amber. Does anyone know how they achieve this? Are they physically replacing the LEDs, or is it just a software modification with OrBIT?

[Swer]

Physically replacing the LEDs to orange.

[Sodertalje]

Physically replacing the LEDs to orange.

Or exchange both tail lights to euro spec ones.