MobileRead Forums - View Single Post - Kubrick: Live CD to debrick Kindle 3, 4, and Touch

tubular · 07-17-2023, 02:39 AM

Thanks a lot for developing this application. I used it to downgrade my K4 from 4.1.4 to 4.1.1 firmware, because I was receiving the "This device is not authorized as a test Kindle by the developer of this item" error.

For future reference: on recent systems, the live USB refused to boot. Even a 2015 laptop didn't work. However, it worked flawlessly on a 2010 ThinkPad (T410s).

07-17-2023, 02:39 AM	#1216
tubular Junior Member Posts: 5 Karma: 10 Join Date: Jul 2023 Device: K4	Thanks a lot for developing this application. I used it to downgrade my K4 from 4.1.4 to 4.1.1 firmware, because I was receiving the "This device is not authorized as a test Kindle by the developer of this item" error. For future reference: on recent systems, the live USB refused to boot. Even a 2015 laptop didn't work. However, it worked flawlessly on a 2010 ThinkPad (T410s).