to hippocratesnoah
if you failed to update your kindle dx as hippocratesnoah.
700507:004006 ota_install: C def
atch
atchinfo="/opt/amazon/ebook/config/framework.mario.conf":checksum failure
solution: use usbnet
edit file opt/amazon/ebook/config/framework.mario.conf
USE_WAN : false
change to
USE_WAN : true
then saved changes, reboot kindle DX.
Then you update to 2.3, may OK.