On the link below you should be able to install framework 2.53 that include ADL 6.53.
http://source.sierrawireless.com/resources/airprime/software/open-at-application-framework-2,-d-,53-full-installer-for-q2698_fx100/
You are right that 6.53 is not available on FXT009. 6.52 is the last one for 2G products.