I just got the Inky Phat so here is exactly what I did. I am using a pi zero without wireless version 1.3 it is call or similar shouldn’t matter isn’t really old.
Installed using bash/curl way in old docs and am using the most current rasp pi os (raspbian). Also tried installing it from github which shouldn’t make a difference but still same situation.
I connected the inky phat and it is a bit loose which I am guessing is ok.
The inky phat is detected in the console so that is good as a black inkphat SSD1608.
I ran the examples and the python inky library. I am stuck because nothing is updating and the original display image is just left on the display.
The badge example of github I get this.
Inky pHAT/wHAT: Hello… my name is:
Use Inky pHAT/wHAT as a personalised name badge!
Detected Black pHAT (SSD1608)
No error but no change on the display even though it seemed successful.