Hey! Great to see a FP3 counterpart for the FP2 one
If you want, I can invite you to the #wearefairphone organization at GitHub and migrate the repo there, thus your work can gain some more visibility, 
Keep up the good work!
P.S.: in fact, I see you used as a base the same Python script I used (well, an updated one). We can even merge the two in the same repo.