Be sure to update the push configuration when upgrading to V13r2
The old mechanism is deprecated.
http://wiki.innovaphone.com/index.php?title=Howto:V13_Firmware_Upgrade_V13r1_V13r2&diff=0&oldid=60534
http://wiki.innovaphone.com/index.php?title=Howto:V13_Firmware_Upgrade_V13r1_V13r2&diff=0&oldid=60534