Hopefully I can get a faster response from here but I'm trying to install the 2nd Bootloader to my Amazon Kindle 2nd Gen (This information is important), but every method I've tried doesn't seem to work. This is with a downgraded Kindle to version 10.2.3 from 10.4.3. Is there possibly a video that can do a step by step instructions or at least someone who has done this before explain what have I done wrong?