(Sorry to update an old thread but I don't find it useful to open a new topic)
Yesterday I tried to downgrade my Kobo Glo 3.8.0 to 2.5.1 and I did everything correctly - downloaded the official firmware, pasted it in the correct .kobo folder, ejected - but after updating, the screen kept stuck on the black dots forever. Luckily I could hard reset it and go back to 3.8. Did that happen because my Kobo Glo is the model N613? I don't understand why that could be a problem though.
I tried again this morning and the same happened. I wish I could go back to the old UI from the 2.5.1 firmware
