The following bug has been fixed with this release
CSCui15688 SP4699 USB driver getting stuck and not generating callback for 7710
 
Following bug exists with this release
CSCuq68635 SP4956# Firmware crash on the 3.5.29.2 firmware


Firmware Upgrade Instructions
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For customers with older firmware (3.5.19.4 or older) on their MC7710 modems, a two step firmware upgrade is required when upgrading to 3.5.29.2. This is necessary to retain the DHCP Relay settings in the modem firmware (refer CSCui45246 for details). Please upgrade the modem's firmware to version 3.5.24.0A first and then upgrade the modem to firmware version 3.5.29.2.  Do not issue a direct firmware upgrade from 3.5.19.4 or an older firmware to 3.5.29.2, as doing so can cause the DHCP Relay settings to be removed and expose CSCui45246.