Firmware: v1.01 7/11/2012 1:26:00 PMRevision Info:mydlink: Wireless intruder alarm function improvement.
Setup wizard flow improvement.
USB compatibility improvement.
SharePort Mobile with Android 4.0 supported
NOTE: if your DIR-636L router is working with out any issues, it's recommended to keep the current version of FW that is loaded.IF IT WORKS, DON'T FIX IT!!! 
Do
NOT upgrade firmware on any D-Link product over a wireless connection.
Failure of the device may result. Use
only hard-wired network connections.
Please follow the (link)>
FW Update Process for upgrading.
Get it here:
DIR-636L