I have two drivelux 51 models.
i was able to update everything on one model without issue.
the second model i tried and i am stuck on “preparing device”
whats especially weird is i have so much free storage on the first model and almost no available storage on the second model.
i tried adding an SD card to the second model but still stuck. I tried switching to mass storage (found in another thread) via the developers screen but still stuck.
i believe this second model may have been used primarily in Ireland (i am in the US).