Good morning DNSB, I am writing because I was looking for a solution after my Kobo Clara HD model N249 froze, I saw this forum and read many posts from people who had the same thing happen. My brother tried a reset, but it froze. We also tried changing the battery, but it didn't work. So we understood that it probably happened like many people, the SD card broke. I kindly ask, if possible, to have the image file to create a new SD card. I hope I wrote everything correctly and I apologize for the inconvenience.
Ella